Molecule CopperWELL 12" Mattress - 2 of 4

Molecule CopperWELL 12" Mattress - 3 of 4

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Molecule CopperWELL 12" Mattress - 1 of 4

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Molecule CopperWELL 12" Mattress - King: Memory Foam, Cooling Technology, CertiPUR-US Certified, 12 Inch, Adjustable Base Compatible

Name: Molecule CopperWELL 12" Mattress - King: Memory Foam, Cooling Technology, CertiPUR-US Certified, 12 Inch, Adjustable Base Compatible
Brand: MOLECULE
SKU: 86904108
Price: 999.00 USD
Availability: InStock
Rating: 4.7 (172 reviews)

3 Questions

$999.00

SizeKing

In Stock

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At a glance

About this item

Details

Highlights

Cool-to-the-touch fabric with cooling technology built in at the fiber level
MOLECULEshield™ antimicrobial treatment
The CopperWELL™ copper infused gel memory foam open cell structure provides the perfect blend of pressure relief, support, and breathability
RecoveryFLO™ 3-Zone Support: Precision-contoured 3D geometric surface provides targeted, self-adjusting support for different parts of the body

Description

Improve your sleep quality, recover faster, and prevent the growth of damaging bacteria and fungus with the MOLECULE CopperWELL™ Mattress. Featuring CopperWELL™ copper-infused gel memory foam that provides the perfect blend of pressure relief and support, with an open-cell structure for improved breathability and actively transfers heat away from the body to provide the ideal temperature for optimized rest and wellness. The memory foam provides ample support in key pressure point areas, while the copper gel pushes back to the areas with less pressure. The two materials work synergistically to deliver waves of alternating response and pressure relief where you need it most. The RecoveryFLO™ Precision-contoured 3D geometric surface provides hyper-targeted, self-adjusting support for different parts of the body. Supporting it all is the thick 8-inch firm ContourFLO™ foundation of maximum support to foster healthy spine alignment.

The CopperWELL™ Mattress features a MOLECULEshield™ antimicrobial treatment to protect against bacteria, fungus, mold, mildew, odors, and degradation due to microbial growth so that you can sleep cleaner all year long. With cool-to-the-touch fiber technology woven into the mattress cover, you are assured that the benefit will never wash out, leaving you comfortably cool every night. MOLECULE is trusted by elite athletes, including Alex Morgan and Michael Phelps, to optimize their sleep and perform at peak levels.

Specifications

Dimensions (Overall): 80 Inches (L), 76 Inches (W)

Weight: 79.6 Pounds

Suggested Age: Adult (18 Years and Up)

Fill Material: 17% Gel Foam, 83% Memory Foam

Fabric Name: Knit

Cover Material: Polyester, Polyethylene, Nylon

Features: Breathable, Compatible with Adjustable Base, Cooling Technology

Foam Type: Memory Foam

Mattress Feel: Memory Foam

Industry or Government Certifications: CertiPUR-US Certified Foam

Coil type: No Coils

Mattress Thickness: 12 Inches

Care & Cleaning: Spot or Wipe Clean

Warranty: Lifetime Limited Warranty. To obtain a copy of the manufacturer's or supplier's warranty for this item prior to purchasing the item, please call Target Guest Services at 1-800-591-3869

TCIN: 86904108

UPC: 810012431798

Item Number (DPCI): 010-19-4152

Origin: Made in the USA

If the item details aren’t accurate or complete, we want to know about it.

Size Guide

all-mattress

mattress

Mattress Size	Average Mattress Dimensions
Twin	39" x 75"
Twin XL	39" x 80"
Full	54" x 75"
Queen	60" x 80"
King	76" x 80"
California King	72" x 84"

All Sizes in Inches Unless Otherwise Stated

Shipping & Returns

Shipping details

Estimated ship dimensions: 19 inches length x 19 inches width x 42 inches height

Estimated ship weight: 86.6 pounds

We regret that this item cannot be shipped to PO Boxes.

This item cannot be shipped to the following locations: American Samoa (see also separate entry under AS), Guam (see also separate entry under GU), Northern Mariana Islands, Puerto Rico (see also separate entry under PR), United States Minor Outlying Islands, Virgin Islands, U.S., APO/FPO, Alaska, Hawaii

This item ships in its manufacturer’s packaging, revealing what’s inside. ·

Return details

This item can be returned to any Target store or Target.com.

This item must be returned within 90 days of the date it was purchased in store, delivered to the guest, delivered by a Shipt shopper, or picked up by the guest.

See the return policy for complete information.

Guests who order a new mattress, mattress set, futon or futon mattress for delivery to an address in California may be eligible to schedule pickup of a used mattress, mattress set or futon mattress. Please refer to California Used Mattress Recovery Act for more information.See more details.

Q&A (3)

Q: Can this be used on an adjustable bed frame

Elove1876 - 2 years ago

A: Any Molecule mattress, including the CopperWELL 12", can be used with an adjustable base.
submitted byMolecule Support - 2 years ago
Brand expert

Q: Is it shipped in a box , rolled up or as is a big mattress ?

paulacita - 3 years ago

A: This is shipped compressed in a box.
submitted byMolecule Support - 3 years ago
Brand expert

Q: What is the weight bearing limit on this mattress?

Felix the cat - 4 years ago

A: There is no weight limit, for optimal performance it is recommended for up to 300 pounds per side.
submitted byMolecule Support - 3 years ago
Brand expert

See all questions (3)

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Guests are saying

The Molecule Copperwell mattress has garnered positive feedback for its comfort, support, and cooling features. Guests appreciate its easy setup and motion isolation, making it ideal for couples. Many have reported improved sleep quality and relief from back pain. While some noted the firmness may not suit everyone, the overall satisfaction with its performance and quality is evident. The mattress is designed to contour to the body while maintaining a cool sleeping environment, making it a great choice for restful nights.

Summary created by AI from text of reviews reflecting recent feedback provided across different star ratings (includes incentivized reviews)

5 out of 5 stars

29 August, 2026

originally posted on The Insiders

The best bed!

[This review was collected as part of a promotion.] I was very excited to try this bed and it did not disappoint. The mattress is firm but still soft and supporting at the same time. I get really hot at night even with a fan, and the cooling features on the mattress have been keeping me cooler at night. When we unboxed, it actually rose pretty quickly to full size and its very high. I would recommend and I actually have told others they should buy one! I also liked how you dont need a frame to use it. I think this is a great mattress for anyone!

devaney1221

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3 out of 5 stars

28 August, 2026

originally posted on The Insiders

Your average foam mattress

[This review was collected as part of a promotion.] The MOLECULE CopperWELL 12" mattress is decent, but nothing special. Every foam mattress I've ever seen advertises a cooler sleep because foam, in general, is supposed to be more breathable. The copper in the CopperWELL appears as brown dots on the foam which I don't believe does much in terms of transferring heat, so I don't think this is any "better" than any other foam mattress. One area that most foam mattresses lack in is edge support and this is no different. The cover was misaligned after the mattress fully expanded, so correcting this will require significant effort because pulling off the cover and back into place is pretty impossible. This is a pretty standard foam mattress in my book.

tintin

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5 out of 5 stars

26 August, 2026

originally posted on The Insiders

Mattress Upgrade

[This review was collected as part of a promotion.] I’m really happy with this memory foam mattress! It’s comfortable without being too soft, and it provides great back support. My old box spring mattress used to make my back feel stiff and I would toss and turn at night. The mattress also does a good job of minimizing motion, which is great when drinking on the bed because the glass won’t bounce or spill as easily. This mattress is a little taller than my old mattress which took some time to adjust to and I also had to buy new bed sheets because the thickness is different. Overall, I would definitely recommend it to anyone looking for a new mattress because it is a great upgrade.

LetsTryIt

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4 out of 5 stars

26 August, 2026

originally posted on The Insiders

No Motion Transfer & No Back Pain

[This review was collected as part of a promotion.] I received the MOLECULE® CopperWELL mattress through The Insiders platform in exchange for my honest opinion. This is my sincere review. The first thing to highlight is how easy it is to move. It comes vacuum-packed in a cardboard box that one person can handle without any problem. It includes opening instructions via a QR code that clearly explains what to do and what to expect when you open the package. In my case, the mattress had no chemical odor or anything unpleasant. It started to "inflate" quickly and fit my bed with no issues. Putting sheets on it is easy. It took about 24 hours to reach a proper level for sleeping on it, although the recommendations say it takes three days to reach its final size. It’s very pleasant to sleep on: it feels firm while still contouring to your body. I wake up without back pain. What I love the most is that you can barely feel your sleeping partner move, which is great for uninterrupted sleep. As for temperature, the MOLECULE mattress matches the temperature of the room it’s in. Overall, I liked the mattress. I’m satisfied with it and I would recommend it. I think there’s room for improvement because MOLECULE® CopperWELL mattresses don’t come with a stain- or spill-resistant cover from the factory. However, a point in its favor is that it includes antimicrobial protection.

ayerim101

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5 out of 5 stars

26 August, 2026

originally posted on The Insiders

A Great Night Sleep

[This review was collected as part of a promotion.] I have been in the market for a new mattress for a few months now. Previously we owned an 8 inch box spring mattress so I was a little skeptical when changing to a memory foam mattress. After letting the mattress sit for 24 hours after opening so it fully expands, we placed it on our frame. The first thing we noticed was the much needed change in height. With a thick mattress we could not more easily hop in and out of bed without having to bend too much. The mattress also provides a medium firm amount of support with is great for our backs. Since changing to this mattress we have had great nights of sleep. The only thing I would change about this mattress would be to introduce a cooling laying since it is a little warm and we do live in a warmer climate.

DoingMyOwnDing

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5 out of 5 stars

25 August, 2026

originally posted on The Insiders

Best Sleep In Years!

[This review was collected as part of a promotion.] This campaign couldn't have come at a better time. I just moved into a new apartment this past week and I knew I would need a bed. This bed is the best I've ever had. I was sceptical at first because I am a guy who likes the plush feel and I knew it wa supposed to be medium firm. However, the Molecule Copperwell is built in a way where it feels plush and firm at the same time. And once you lay down, you feel at rest immediately! I would recommend this to anyone 12/10.

odfresh06

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5 out of 5 stars

25 August, 2026

originally posted on The Insiders

Love this mattress!

[This review was collected as part of a promotion.] I love this mattress! It’s supportive yet firm and I’ve been sleeping great since unboxing it. The packaging made it convenient to move and it wasn’t too heavy. I set it up my myself and it quickly inflated. I sleep on it the first night and it’s been great every night since. It regulates temperature well and doesn’t get too hot at night. I’ve been feeling more well rested and energized throughout the day, which I think is because of the mattress. I would recommend it to anyone looking for a new mattress.

chandlerqb

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4 out of 5 stars

25 August, 2026

originally posted on The Insiders

MOLECULE CopperWELL 12" Mattress

[This review was collected as part of a promotion.] Foam mattresses have come a long way. I have always been a traditional (innerspring) mattress person, but have had the opportunity to experience this MOLECULE CopperWELL 12" mattress. Just like a majority of modern mattresses, this mattress ships in a vacuum-sealed bag rolled up into a box. Setup is pretty straightforward: unroll the mattress, cut open the bag, allow the mattress to expand. I currently sleep on a "very firm" innerspring mattress so I wanted something that felt similar. My initial impressions of the mattress, after waiting 24 hours, is that the "medium firm" is just right for me. While I have only slept on the mattress for one night so far, I was able to sleep perfectly fine and look forward to evaluating it more over time. The first layer of foam is advertised as the CopperWELL layer with "gel [that] relieves pressure while helping heat move away from your mattress". While I typically sleep hot, I did not notice any additional "breathability" that this layer may have offered over my usual mattress - this is not a bad thing. Taking a look at the actual layers, you can see brown-colored bits embedded into the first-layer foam which I'm assuming is the CopperWELL gel. I think the idea behind the marketing is that copper is very conductive and has the ability to move heat efficiently, however, the heat has to actually go somewhere which I'm not certain these little bits can accomplish effectively. Overall, this mattress works well for my needs and I look forward to more nights to see if my sleep improves. The one thing that kept this from a 5-star perfect review for me is that after the mattress fully expanded, the cover was shifted off center. I don't know if this is because of the vacuum process or if it was misaligned before packing. Either way, it is nearly impossible to adjust the cover and likely requires it to be fully removed and put back on.

ingr

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5 out of 5 stars

25 August, 2026

originally posted on The Insiders

comfortably cool

[This review was collected as part of a promotion.] This Molecule mattress offers the soft, gentle feel I need when I plop down on the sheets. I feel myself come to a comfortable rest after sinking gently through the top layer. I feel cool when I sleep on this mattress, and it doesn't bounce or make noise when my wife needs to exit or enter the bed. I normally sleep on my side, but I do frequently toss and turn. My wife hasn't complained about me waking her up, so it passes that test. This mattress has a transition layer that draws heat away from me when I sleep. I needed this feature. I received this mattress for a discount in return for my honest review.

Nappy

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5 out of 5 stars

25 August, 2026

originally posted on The Insiders

I don't want to leave my bed now!!

[This review was collected as part of a promotion.] I needed a new mattress, and when I made this swap it was a game changer. I feel like my new bed is always nice and cool to the touch. Now I feel like I don't have to worry about being hot when I'm trying to sleep. Also with this bed I feel as if no matter how I sleep or wake up I'm always recovered without stiff necks or muscles. With the RecoveryFlo foam that provides support I feel as if I'm always able to recharge and recover after any long day.

RLBillings

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5 out of 5 stars

25 August, 2026

originally posted on The Insiders

Very great sleeping experience

[This review was collected as part of a promotion.] I received this CopperWell mattress in discount in exchange for my honest review. So far I'm highly satisfied with this mattress. I’ve had it for a little less than a month and I can say that I'm sleeping well and my body feels supported! My wife also is been able to sleep much better, the mattress is very comfortable. Compare with my previous mattress this one is firm and soft at the same time which really helps with my posture. Whether you sleep on your side, back or stomach I enjoy any posture and woke up next day very rest and happy. I loved the temperature control that this mattress is made, you can feel it specially in this hot summer days. We Totally recommend it.

luis233

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3 out of 5 stars

25 August, 2026

originally posted on The Insiders

Best Matress

[This review was collected as part of a promotion.] I was due for new mattress i was looking to purchase new one and i came across Copper-well 12'' Mattress ordered. Couple of days later showed up on my door steps in a box followed direction opened it lets it expand from vacuumed bag. Let me tell you its so comfortable to sleep i haven't had a good sleep like this on my old mattress in while definitely recommend this as your next purchase if your looking for new mattress.

Shavkat

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5 out of 5 stars

25 August, 2026

originally posted on The Insiders

Refreshing. Every. Moment

[This review was collected as part of a promotion.] The CopperWell mattress has changed my experience overnight. The textured feel of the mattress contours to my back and shoulder curves, making it an extraordinary night of R.E.M. sleep. If you sleep next to someone who tosses and turns, you won't notice any movement throughout the night. CopperWell is thick and the layers are beyond effective. The handles on both sides make the mattress incredibly easy to carry. CopperWell has changed the way I will sleep - forever.

SophiaGold

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5 out of 5 stars

25 August, 2026

originally posted on The Insiders

Review - CopperWell Mattress- 12inches

[This review was collected as part of a promotion.] I've been sleeping on the CopperWELL® 12" Mattress for a while now, and it's been a great upgrade. It has a nice balance of softness and support, so I don't feel like I'm sinking in, but it's still comfortable enough to relieve pressure on my shoulders and hips. I also noticed that it stays fairly cool throughout the night, which has made sleeping much more comfortable. The mattress arrived well packaged, expanded quickly, and didn't have a strong odor. Overall, it offers excellent comfort and quality for the price, and I'd definitely recommend it to anyone looking for a supportive and comfortable mattress.

Umerkhan1

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5 out of 5 stars

25 August, 2026

originally posted on The Insiders

Comfortable Night's Sleep

[This review was collected as part of a promotion.] I honestly wish I had bought this mattress years ago. I've had it for weeks now, and it's been comfortable. We're a mix of tall, larger adults and shorter, smaller people, and it works well for us. We also have both a side and back sleeper and neither of us has had any complaints. It's comfortable without being too soft. It has just the right amount of firmness to feel supportive, and the 12" thickness feels substantial without being overly bulky.--And 12" mattresses are easier to buy fitted sheets that fit. One thing I would mention is that the base matters. We use a wooden slat foundation with slats about 3" apart, which is what the manufacturer recommends. Besides giving the mattress the support it needs, using the right foundation also helps avoid warranty issues (per the information from Molecule). I'm planning to buy another one for our guest room because it's been such a good all-around mattress. It's definitely one of those purchases that makes you wonder why you waited so long.

FoodieFamily

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5 out of 5 stars

25 August, 2026

originally posted on The Insiders

Pleasantly Suprised

[This review was collected as part of a promotion.] I had been needing a new mattress for a few years, but kept putting it off because there are so many brands and types to choose from, especially when it comes to memory foam. The options were overwhelming! I finally decided to take the plunge and purchased the Molecule Copperwell 12” Medium Firm mattress, and I’m so glad I did! The mattress arrived compressed in a surprisingly compact box that was easy to maneuver. I was even able to carry it to the upstairs bedroom by myself. Setup was simple, just remove the vacuum-sealed plastic and let the mattress expand for a few hours. I was really surprised that there was no unpleasant odor when I opened it. In my experience, vacuum-sealed foam products usually have a strong chemical smell, but this mattress didn’t. After sleeping on it, I can honestly say the description is very accurate. The medium-firm feel is exactly what I was hoping for. It contours nicely to my body without making me feel like I’m sinking into the mattress, which was one of my biggest concerns with memory foam. The copper-infused cooling technology also makes a noticeable difference. I tend to sleep warm, and I can definitely tell that this mattress stays cooler than my previous one. I’ve been much more comfortable throughout the night. I used to wake up every morning with significant lower back and neck pain, and since switching to this mattress, my pain has been reduced dramatically. Overall, the mattress feels luxurious, and the quality and craftsmanship really stand out. So far, I have absolutely no complaints and couldn’t be happier with my purchase. Even my kitty has claimed it as her favorite nap spot and spends hours snoozing on it every day!

epope

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4 out of 5 stars

24 August, 2026

originally posted on The Insiders

Molecule 12 inch mattress

[This review was collected as part of a promotion.] This mattress was a pleasant surprise. I really wasn't sure what to expect since I had never heard of this brand before. So far I really enjoy it. It is really comfortable especially if you like firm mattresses. It helped my back and I was able to sleep soundly. I also felt like it let me breathe and kept me cool throughout the night. I would recommend this to anyone who wants a firm good night's rest.

mdawg2020

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5 out of 5 stars

24 August, 2026

originally posted on The Insiders

Super Impressive Mattress

[This review was collected as part of a promotion.] We are super elated that we finally made the decision to get a Molecule CopperWELL mattress. It was crazy simple and fast to set it up right out of the box; it was ready for a nighttime customer in just a few short hours. It's considerably lighter than an innerspring mattress, so it has a much less chance of having any sagging in 10 years. I am a side sleeper and it gives me great support. During the hottest parts of the year like now, their cooling technology is noticed and appreciated. This is absolutely an economical option because it's just as good as other more well known brands. So glad we got one!

CountryBoy35

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5 out of 5 stars

24 August, 2026

originally posted on The Insiders

Firm, comfortable mattress

[This review was collected as part of a promotion.] I was super excited when I found out that I was selected to participate in this campaign, as my husband and I were in sore need of updating our mattress. I like the comfort of memory foam, but find it too soft without enough support and very hot to sleep on, so I was intrigued by the promises of the molecule mattress to provide support while also being cooling. It arrived in a large box which was quite heavy, it took both my husband and I to be able to carry it upstairs. It was vacuum sealed, but expanded quickly once opened, probably took about 15 minutes or so. I wanted to wait a month or so before writing my review so that I could thoroughly evaluate my opinion on the Copperwell 12” mattress. I have to say that it is really comfortable and conforms to your body contour without feeling too stiff, it definitely has a firm feel to it however. It is also pleasantly cool to sleep on, and doesn’t seem to generate the same amount of heat as traditional memory foam. Overall I was pleasantly surprised with this mattress and would recommend it if looking to purchase a new mattress.

Greenthumbelina

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5 out of 5 stars

24 August, 2026

originally posted on The Insiders

MOLECULE CopperWELL® 12

[This review was collected as part of a promotion.] After unboxing the mattress it took no time to set into its shape. It's been about a week & this has been some of the best nights sleep I've had in years. The mattress is soft, it feels like I'm sleeping on a cloud. Its cooling temperature keeps my body temperature regulated so I'm no longer sweating in my sleep. With my old mattress I would toss and turn and I always woke up with back pain. Sleeping on this mattress I can wake up on my back or my side and my full body feels great. I feel more well rested & ready to start my day. I love this mattress & my kids love it too. This mattress gives meaning to the phrase "sleeping like a baby" because that's exactly what me my toddler have been doing. I would definitely recommend this mattress.

TiffieT84

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Molecule CopperWELL 12" Mattress - King: Memory Foam, Cooling Technology, CertiPUR-US Certified, 12 Inch, Adjustable Base Compatible

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Q: Can this be used on an adjustable bed frame

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At a glance

About this item

Details

Highlights

Description

Specifications

Size Guide

Shipping & Returns

Shipping details

Return details

Q&A (3)

Q: Can this be used on an adjustable bed frame

Q: Is it shipped in a box , rolled up or as is a big mattress ?

Q: What is the weight bearing limit on this mattress?

Discover more options

Frequently bought together

Guests also viewed