Thinx Teens Cotton Bikini Leakproof Period Underwear, S-XL, Black
Thinx Teens Cotton Bikini Leakproof Period Underwear, S-XL, Black
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Thinx Teens Cotton Bikini Leakproof Period Underwear, S-XL, Black

Thinx Teens Cotton Bikini Leakproof Period Underwear, S-XL, BlackThinx Teens Cotton Bikini Leakproof Period Underwear Size 13 14 Black2 pack Thinx Teens Cotton Bikini Leakproof Period Underwear Size 15 16 Black2 pack Thinx Teens Cotton Bikini Leakproof Period Underwear Size 13 14 BlackThinx Teens Cotton Bikini Leakproof Period Underwear Size 15 16 BlackThinx Teens Cotton Bikini Leakproof Period Underwear Size 11 12 Black2 pack Thinx Teens Cotton Bikini Leakproof Period Underwear Size 9 10 BlackThinx Teens Cotton Bikini Leakproof Period Underwear Size 9 10 Black2 pack Thinx Teens Cotton Bikini Leakproof Period Underwear Size 11 12 Black
Size:L
Multipack Quantity:1

Key item features

  • Teen Specific: Designed specifically to fit teens, these period undies come in a classic bikini style and are available in sizes S-XL, including size 13/14.
  • Superior Absorbency: Features an absorbent core layer capable of holding up to 12 regular tampons' worth of flow, or 3 regular pads' worth, providing reliable protection.
  • Leakproof Protection: Equipped with a LeakSafe barrier, these underwear prevent leaks for up to 12 hours, keeping clothes and sheets protected.
  • Comfortable Material: Made from cozy, flexible cotton, ensuring comfort while also controlling odor and wicking moisture for a fresh and dry feeling.
  • Versatile Use: Can serve as a complete replacement for disposable period products or as a backup when using tampons or menstrual cups.
  • Safe & Certified: Not made or treated with PFAS and certified according to OEKO-TEX STANDARD 100 for safety and quality.
  • Reusable Care: Machine-washable and reusable, simply wash on cold and line dry; recommended replacement after 30 washes.
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Current price is $16.68
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Customer ratings & reviews

4.3 out of 5 stars
stars498 ratings241 reviews
How item rating is calculated
  1. 5 stars70% (348)
  2. 4 stars13% (65)
  3. 3 stars5% (25)
  4. 2 stars4% (19)
  5. 1 star8% (41)

Reviews summary

Pros

  • : Made to feel like regular underwear.
  • : Provides additional security against leaks.
  • : Prevents leakage and odor with fabric.
  • : Designed to fit comfortably, not too tight.
  • : Absorbs liquid effectively without added bulk.
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Showing 1-3 of 241 reviews

Jun 23, 2025
Melissa
Top Reviewer
Item details
Size: L
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Leak Free

I bought this for my 11 year old daughter. fit her well. she is 88 lbs 5 ft. She wore it during her last cycle, she was comfortable and there was no issues with leaking. It was easy to rinse out and held its shape and material well.

Helpful?4FQ3YDR0AFU85088619406
Jan 12, 2026
SJ
Item details
Size: M
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

1 con- its not easy/convenient to keep track how many times you wash to equate the 30 max. We have 5 pairs, and Thinx is the only brand I'll buy. The security %26 fit are great and they do hold up for at least 30 (60 really) washes(probably a tad more really). I treat these like cloth diapers -utility sink soak/wash with Dawn until water runs clear. Sometimes that takes an overnight soak to unlock all that has been absorbed. FYI: Never let a used pair just sit dirty/dry! Wet=easier rinse %26 odor control stays intact. My daughter noted the leak control immediately decrease %26 I was prompted to ask the very wash following, as suddenly there were fuzzy pils of the absorbent layers breaking down coming through the wearable laye as I pre-rinsedr. Just all of a sudden, thankfully. It held up for a day at school %26 embarrassing mess was avoided, thankfully!

Helpful?4FQ3YDR0AFU85088619406
Feb 23, 2026
Stacey
Top Reviewer
Item details
Size: M
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Sizes run a bit smaller, but a great product.

I bought this fory 13 yr old daughter to try. I was going to get small, but decided a medium. I'm glad I did, but the medium size was tight on my daughter. She is little as it is. These seem to me that they run like two sizes smaller. I'm not sure if or how tight they should be. I know they should hug the skin, but like a second skin? not sure. They do work very well aside from the size issue.

Helpful?4FQ3YDR0AFU85088619406