Say hello to your new go-to for heavy days, light days, and everything in between. This is absorbent underwear for women designed to keep up with your life — not slow it down. Whether you’re managing your period, bladder leaks, or postpartum recovery, this pair is built to handle it all with leak resistant protection, buttery-soft comfort, and a whole lot of confidence. Crafted with our ultra-flexible Flow Stretch™ fabric, these womens period underwear hug your body without digging or rolling, moving with you through every twist, stretch, and nap. Inside, a gusset lined with 95% organic cotton — and absolutely made without PFAS — provides breathable, skin-loving softness where it counts most. Designed to absorb up to 9 tampons’ worth of fluid, this is your heavy flow period underwear hero. No backups. No bulk. Just smart, sustainable protection that works. And the best part? One pair replaces hundreds of disposable pads and tampons, saving you money while reducing waste. From teens navigating their first cycle to marathoners chasing finish lines, thousands trust this menstrual underwear for women to keep them dry, confident, and leak-free — without ever sacrificing comfort.
Package Dimensions : 8 x 8 x 1 inches; 5 ounces
Item model number : The Bikini Period for Heavy Flows
Department : womens
Date First Available : April 11, 2025
Manufacturer : Period. By The Period Company
ASIN : B0F4K8DH62
Best Sellers Rank: #133,639 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #195 in Women’s Bikini Panties
Customer Reviews: 4.5 4.5 out of 5 stars (34) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
The Period Company Flow Stretch Bikini Absorbent Period Underwear for Women Heavy Flow — Leak Resistant Panties Women, Black
$11.19
0
People watching this product now!
Reviews
8 reviews for The Period Company Flow Stretch Bikini Absorbent Period Underwear for Women Heavy Flow — Leak Resistant Panties Women, Black
Shop Woodmart
Nathan –
Must have
This product is way better than expected. I bought this for my daughter[15] and she has a regular cycle and they hold up all day with very little odor at the end of the day, no feeling of being wet, and no leaks. She said they are very comfortable and she will never go back to pads.
Nargis🦋 –
That’s good. It’s not bad. I like it.
I really like it, but it’s showing in the picture. It was long from front not to all the way to the bed.
CC –
Great pair of period undies
Ordered these for my teen, she gave them a glowing review. The fit was tighter than normal underwear but where these really shined was coverage. She said it was nice not to worry about leaks in the middle of the night. They function better than expected. She liked them so much I ordered three more pairs. The price point is fantastic compared to other pairs! I was able to order three of these for what one pair in a few other brands costs. I washed them on cold and hung to dry and they washed up well. They feel well made with no loose stitching.
Jim P –
Snug but does it’s job well
Like most period underwear, these do run small. This pair has a snug fit, even compared to other brands I’ve tried. I recommend sizing up. That said, they do stay in place well. The absorbency has been solid throughout the day with no leaks and they don’t leave an uncomfortable wetness. They also don’t develop much odor by the end of the day, which is something I always worry about with period underwear. The material feels well made and holds up nicely after washing. Just remember to airdry. One of the biggest positives is the price point, as it’s more affordable than a lot of other period underwear.
Jessica Carroll –
Works great!
Was skeptical but works great and super comfy!
BLANCA –
It leaks
The fabric and the thickness is very good and soft. But unfortionally is not waterproof. It wets when is a bit full. I only tested in 30 ml. And it was soaking all ready
Armine Shamiryan –
Never leaks
Fits great and never leaks.
AF MILLER –
Panties
The The Period Company Flow Stretch Bikini Absorbent Period Underwear in black is a practical and comfortable choice for women dealing with heavy flow days. The bikini cut feels familiar and flattering, while the stretch fabric moves with you instead of feeling restrictive. What really sets it apart is the absorbent core, which is designed to handle heavier menstrual flow without leaks—so you can go about your day without constantly worrying about replacements or protection.What makes these underwear stand out is how wearable they feel for everyday life. The fabric is soft against the skin and the fit stays smooth under clothes, making them easy to pair with jeans, skirts, or loungewear without feeling bulky. They’re washable and reusable, which not only helps cut down on waste but also makes them a cost-effective option over time. Overall, this pair offers reliable protection with comfort and discreet style, making it a solid backup or alternative to pads and tampons on heavier days.