Proof Underwear Everyday Light Medium Briefs - Black
$19.99
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Fit & style
- FOR EVERYDAY LEAKS: These Everyday Light Briefs hold up to 1 regular tampon and absorb light spotting, sweat, little leaks, and discharge.
- POWERED BY ALWAYS: Proof’s patented Leak-Loc technology was further tested and developed in partnership with the makers of Always
- FITS & LOOKS LIKE EVERYDAY UNDIES: This Everyday Light Brief offers on-the go protection, featuring a mid-rise, moderate coverage fit with seamless edges
- ABSORBENT CORE: Proof reusable period underwear is designed with a built-in absorbent core to pull fluid away from your body, helping keep you protected all-day
- WASHER & DRYER FRIENDLY: Ease your load with Proof undies. Simply toss your worn undies in the washer and dryer with rest of your laundry, and you're ready to go!
- FIND YOUR PERFECT PROOF FIT: Proof Underwear sizing versus US Pant Size: XS: 0-2; Small: 4-6; Medium: 8-10; Large:12-14; XL: 16-18; 2XL: 20-22; Check the Proof Fit Guide in images to learn more
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4.6 out of 5 stars with 157 reviews
4 out of 5 stars
24 February, 2026
originally posted on influenster.com
Amazing for medium flow girls!!
[This review was collected as part of a promotion.] I received this product from Influenster to try it out and review it. I did try the underwear and it’s just so amazing. It’s easy to wash, you can put it with your regular laundry. It works wonders for girls with medium flow, does not leak at all. Breathable material, fits to size and very comfortable when you have them on.
5 out of 5 stars
11 February, 2026
originally posted on influenster.com
Like but not love love
[This review was collected as part of a promotion.] Great period underwear. It absorbs and it’s comfortable. Feels soft not bad it’s good for days when u don’t know if a light day or not. It’s literally the same material as other stores
5 out of 5 stars
26 January, 2026
originally posted on influenster.com
Best period panty!
[This review was collected as part of a promotion.] Absolutely love these period panties! These are thin and smoothing instead of feeling like I am wearing a giant pad or diaper. I have some other brands and they are uncomfortable and bulky. These are light and breathable with the perfect amount of coverage. I got my normal size and they fit perfect. I like to wear these at night or on my lighter days towards the end of my cycle. I will definitely be purchasing more!
5 out of 5 stars
19 December, 2025
originally posted on influenster.com
useful
[This review was collected as part of a promotion.] love these. they are very absorbant and don’t leak. they are easy to wash and don’t really smell. it’s my first time using them and i would definitely use again.
3 out of 5 stars
11 November, 2025
originally posted on influenster.com
Not Breathable
[This review was collected as part of a promotion.] The Proof light period underwear has a great fit and is super comfortable to wear. It feels secure throughout the day and never rides up. I love how it’s seamless for the most part, because I get so insecure about panty lines. My only issue is that the fabric doesn’t seem very breathable, and I’ve noticed it tends to create odors within a couple of hours of showering and wearing them. I’ve used several other brands of period underwear and never had that problem, so that was really disappointing. Overall, I love the comfort and fit, but I wish the material allowed for better airflow and freshness.
5 out of 5 stars
11 September, 2025
originally posted on influenster.com
Honestly some of the best period underwear on the
[This review was collected as part of a promotion.] Honestly some of the best period underwear on the market of not the best! After finally having the courage to wear them I was super impressed, comfortable, no leaks, no rips, and they fit snug while having room to be comfortable. Gonna order more and I’d definitely recommend to anyone he wants security and comfortability while on their cycle.
5 out of 5 stars
10 August, 2025
originally posted on influenster.com
Comfortable
[This review was collected as part of a promotion.] I tried it for a first time and I like it. It’s comfortable and good absorbing. Fit really well, I took size S - perfect fit. So I think will be use it every month
4 out of 5 stars
8 August, 2025
originally posted on influenster.com
Good choice
[This review was collected as part of a promotion.] This is my first time trying period underwear so I really didn’t know what to expect. The underwear is surprisingly very thin and comfortable. I was a little worried the underwear would be too thick but I barely noticed it when wearing it. I don’t have heavy periods so I can’t speak too much about how well it holds but it was absorbent enough for me.
4 out of 5 stars
3 August, 2025
originally posted on influenster.com
Good
[This review was collected as part of a promotion.] It’s really convenient and comfortable to use it fits nice I can’t complain I like that it’s reuseable bc you wash it and can use it again so that’s nice it does the job so
4 out of 5 stars
1 August, 2025
originally posted on influenster.com
Soft, comfortable and breathable!
[This review was collected as part of a promotion.] Tried these period underwear for the first time—and I’m actually impressed! This was never something I have ever thought of purchasing but they’re actually super comfy, soft, and stretchy, and the material is really breathable. I wore them on the last day of my period when things are usually light, and it was perfect. I would possibly consider buying another pair!
5 out of 5 stars
1 August, 2025
originally posted on influenster.com
Keeps me worry-free!
[This review was collected as part of a promotion.] Comfortable, breathable, enough support to help keep me from worrying during that time of the month. Fits great and you can tell that you wont get any rips or holes easily.
4 out of 5 stars
30 July, 2025
originally posted on influenster.com
Run a little small
[This review was collected as part of a promotion.] I ordered the size that I wear in underwear. I feel like I should’ve sized up. Other than that they are pretty soft and do the job that they are supposed to.
5 out of 5 stars
24 July, 2025
originally posted on influenster.com
Great choice
[This review was collected as part of a promotion.] Was honestly surprised by how well these worked. The layer is thick enough to feel secure, but still comfortable to wear all day. No leaks, even overnight, and they’re easy to wash. Definitely a great option if you’re looking to cut back on disposable products.
4 out of 5 stars
23 July, 2025
originally posted on influenster.com
Worth it
[This review was collected as part of a promotion.] It is very comfortable. Really dont know it is there. It doesn't feel hot. They are easy to put on and take off. Don't bleed through. Don't get nasty like pads do. Doesn't mess up.
5 out of 5 stars
22 July, 2025
originally posted on influenster.com
Just try it
[This review was collected as part of a promotion.] Omg I never knew I would need period underwear or love them as much I do. They are so comfortable I need to buy 10 more pairs. If you haven’t tried give these a try they will not fail you!
5 out of 5 stars
21 July, 2025
originally posted on influenster.com
Comfortable
[This review was collected as part of a promotion.] Very comfortable! They fit really well and seemed like they held a lot. Very breathable. Seems like they would last a long time due to the quality!
5 out of 5 stars
21 July, 2025
originally posted on influenster.com
Great period panties!
[This review was collected as part of a promotion.] These Proof period panties are everything!! I dont ever want to go back to traditional menstrual products after trying these. Theyre very comfy, and super absorbent. They sit just like any normal pair of panties and you can throw them straight in the wash at the end of the day!
4 out of 5 stars
21 July, 2025
originally posted on influenster.com
such a good product
[This review was collected as part of a promotion.] it works really good. Whenever I wore it. Nothing leaked through. It’s so breathable still, and it fits really good. Like it’s kind of like shapeware in a way, but not exactly. and it’s not like anyway tight like it is very breathable. You are not gonna have any problems with anything being too tight.
5 out of 5 stars
21 July, 2025
originally posted on influenster.com
Comfortable
[This review was collected as part of a promotion.] Super comfy and lightweight. Seamless and perfect to wear with anything. They offered a lot of coverage and are perfect to use on light flow days.
5 out of 5 stars
18 July, 2025
originally posted on influenster.com
Nice!
[This review was collected as part of a promotion.] The fit on these were great and comfortable! They seem breathable but also durable. I would recommend to add this to whatever you’re using now or alone.