Sealy Posture Haven 2-Stage Crib and Toddler Mattress: Waterproof Cover, Polyester Fiber Fill, No Foam, 5.5 Thick
$99.99
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4.5 out of 5 stars with 51 reviews
81% would recommend
16 recommendations
1 out of 5 stars
Thumbs down graphic, would not recommend
31 December, 2025Verified purchase
Doesnt Fit a Standard Sized Crib
It doesn’t fit our crib! We have a standard sized delta crib but this is too small. In parts there was over an inch gap, and I could fit my entire hand in the gap in some areas. It’s unfortunate because the mattress was the perfect firmness for our newborn, and felt like it was good quality, and would be easy to clean but just doesn’t fit. We had a Sealy crib mattress for our first born 5 years ago that we loved and it fit snug into the same crib, but unfortunately it wore down as we used it for our son as he became a toddler, and Sealy no longer makes that model anymore. I included a picture measuring the gaps and a video showing my hand fitting in the side.
1 reply from Kolcraft-Sealy Baby team - 3 months ago
Hi, the Sealy Posture Haven 2-Stage Crib and Toddler Mattress passes all regulations to fit inside a USA standard crib. Please check the assembly of the crib as cribs must meet federal requirements as well as crib mattresses. Crib mattresses are a standard size and size tested to pass crib mattress regulations and every Sealy baby crib mattress meets that standard. Feel free to contact us directly at 1-800-453-7673. Thank you.
1 out of 5 stars
Thumbs down graphic, would not recommend
12 November, 2024Verified purchase
Mattress too small for standard size crib
This mattress measures smaller than the measurements listed on the description. It’s a safety hazard due to the size of gap between the side of the mattress and a standard size crib. It was also shipped in just a plastic wrapping that you have to cut open to get the mattress out and there’s no barcodes or labels on it anywhere, so I’m not sure how I will even be able to return it.
1 reply from KolcraftStaff team - 7 months ago
Hello Cori, the mattress has been tested to ASTM crib mattress standards for a perfect fit in cribs and toddler beds, and measures 51.63 x 27.25 x 5. 5 inches.
3 out of 5 stars
Thumbs down graphic, would not recommend
5 March, 2023Verified purchase
Not great matress
Infant side feels like air matress when just placed fist to feel its aa feeling like air inside a plastic cover
5 out of 5 stars
Thumbs up graphic, would recommend
21 February, 2023
So far so good
Bought this bed for my toddler and she seems to like it. I like that it has the dual-sided feature.
5 out of 5 stars
Thumbs up graphic, would recommend
6 February, 2023Verified purchase
Great for the price
Chose this over a foam mattress. It has springs and is firm. I like that it's waterproof and that it can be flipped for when our newborn grows. Purchased a pillow topper to make it softer for her.
5 out of 5 stars
Thumbs up graphic, would recommend
22 March, 2022Verified purchase
Priced right and grandbaby sleeping great!
Bought for crib we purchased for our grandchildren when they come to stay overnight. Prefer to pack n play and they sleep much better.
5 out of 5 stars
14 February, 2022Verified purchase
the best mattress
Holds up well to a sturdy toddler. Definitely a great buy
5 out of 5 stars
Thumbs up graphic, would recommend
17 January, 2022Verified purchase
Good quality
Good quality at a great price. Our baby is sleeping better since we moved her to this mattress.
5 out of 5 stars
Thumbs up graphic, would recommend
11 July, 2021
Great mattress
We have been using this mattress for about three weeks. Our two year old is sleeping great so no complaints here. I love that it is double sided and a different firmness for an older baby/toddler. It doesn’t seem to have that plastic-y noise when she moves around that you can hear on other mattresses.
5 out of 5 stars
Thumbs up graphic, would recommend
6 July, 2021
(no review title)
This toddler mattress is the best I tried it out and its worth every penny I do recommend to all very comfortable if you wanna get a mattress I recommend this one for your toddler my baby enjoy sleeping in it
5 out of 5 stars
Thumbs up graphic, would recommend
6 July, 2021
Must have!!
This is my child favorite mattress reviews. She has absolutely no issue falling asleep at night. It is super comfortable for her and I love all the safety features. It truly is a safe mattress that I have no issue my daughter sleeping on. I also love that if it's standard crib mattress sheets and mattress protectors. If it's great in our crib as well as the toddler bed that my three-year-old uses. I feel like we are going to get several years out of this mattress with no issue.
5 out of 5 stars
Thumbs up graphic, would recommend
3 July, 2021
(no review title)
I love how versatile this mattress is! It goes from being safer for an infant to more comfy for a toddler. My boys wanted to climb on it right away. Babies grow into tots faster than fast. This is an awesome product to keep up with their growth spurts.
5 out of 5 stars
Thumbs up graphic, would recommend
29 June, 2021
Best Mattress For Baby-Toddler Years!
I couldn’t be happier with this mattress! Our crib converts to a toddler bed and I love that this mattress is a 2 in 1! We currently have it on the infant side but will be flipping over when she’s ready. This mattress is firm enough to still provide comfort. It fits PB Kids and BurtsBees crib sheets perfectly! (We also have the mattress cover too) It sits in the crib with no gaps near the edges. So far we have loved using it, baby girl is happy and so am I. I’ve bought another Sealy crib mattress before when my son was a baby and it was well made but the option to flip it for toddler use makes this version 100Xs better! Will update in a few months when she’s using it as a toddler bed
5 out of 5 stars
Thumbs up graphic, would recommend
28 June, 2021
(no review title)
This mattress is great for infants or toddlers. The thing I like the most is one side is firm for infants and other side is soft for toddlers. My toddler is all over the bed and he finally sleeps through the night and I believe it’s because this mattress is so comfortable for him. It is waterproof and great quality. The corners are found so it fits easily in the crib. Cleans easily with the protected covering it makes it easier to wipe clean.
5 out of 5 stars
Thumbs up graphic, would recommend
27 June, 2021
(no review title)
So far, so good. My daughter has been sleeping with me for a while and it was time for me to put her into her own bed. So I tried this mattress out and it worked like a charm! I love how there are two sides to it and it's waterproof.
5 out of 5 stars
Thumbs up graphic, would recommend
24 June, 2021
Fits perfectly in my toddler's convertible crib!
This mattress is super supportive, with 2 different levels of firmness on each side. This is great when considering a mattress for your child that will transition with them, just like a crib that changes into a toddler bed does. This mattress fit perfectly length and width wise, and provides a perfect height that is appropriate for a toddler. I had no issues using a bumper on it, to help keep my little girl from rolling out of bed. I also love how it is waterproof and so easy to clean, because she is just learning how to sleep without diapers. Very satisfied and highly recommend!
5 out of 5 stars
Thumbs up graphic, would recommend
18 June, 2021
(no review title)
So far so good. Fits my regular sized crib perfectly. My other crib mattress had an indent in the center from my son, I’m hoping this one last longer than a year and does not do that. Will update if I notice the wear starting to form. Love that it’s waterproof material and that you can flip it over for a firmer or softer side. Genious!