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Thinx underwear that absorbs your periodThinx Teens period underwear for teensThinx for All by Thinx underwear for bladder leaks

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Malak is 5'8", hip size 34, wearing a size XS

Thinx Modal-Cotton-Lace-Brief Black Front
Thinx Modal-Cotton-Lace-Brief Black Side
Thinx Modal-Cotton-Lace-Brief Black Back
Thinx Lace-Brief-Heavy Black Gusset

Modal Cotton

Final Sale 50% off

Modal Cotton Lace Brief

Original Price

$38

Sale Price

$19

Thinx underwear is not made or treated with PFAS

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Malak is 5'8", hip size 34, wearing a size XS

Thinx Modal-Cotton-Lace-Brief Black Front
Thinx Modal-Cotton-Lace-Brief Black Side
Thinx Modal-Cotton-Lace-Brief Black Back
Thinx Lace-Brief-Heavy Black Gusset

Thinx underwear is not made or treated with PFAS

absorbency heavy

4 out 5 droplets
holds4
worth.
colorBlack

 - final sale*

Select a color

size

size chart

buy 3, save 10%

Buy 3-4 pairs for 10% off

Buy 5-6 pairs for 15% off

Buy 7+ pairs for 20% off

Savings are applied automatically during checkout. Our custom Set discount applies to Thinx period underwear and Thinx for All Leaks bladder leak underwear (but excludes Saver Sets).

buy 3, save 10%

Buy 3-4 pairs for 10% off

Buy 5-6 pairs for 15% off

Buy 7+ pairs for 20% off

Savings are applied automatically during checkout. Our custom Set discount applies to Thinx period underwear and Thinx for All Leaks bladder leak underwear (but excludes Saver Sets).

*final sale items are not eligible for returns or exchanges.

style

A silky-smooth, lacy take on our full-coverage Cotton Brief silhouette.

Thinx underwear is not made or treated with PFAS.

fit

This heavy absorbency style sits below the belly button and has a leak-fighting center panel that extends through the back of the underwear. Fits true to size.

Thinx_Modal-Lace-Brief_Style+Fit.jpg
Your go-to pair when you want reliable period protection with a lacy, elevated look.

fabric

  • body/liner: 53% SUPIMA® Cotton, 35% TENCEL™ Modal, 12% elastane
  • side panels: 91% polyamide 9% elastane
  • gusset 1 (wicking): 100% polyester
  • gusset 2 (absorbent): 96% cotton, 4% elastane
  • gusset 3 (barrier): 100% polyester, coated with PU
  • polyester, cotton, elastane, polyurethane, Agion®, Lava XL-N®
  • Thinx underwear is not made or treated with PFAS.

Our underwear is certified according to STANDARD 100 by OEKO-TEX:registered: [20.HUS.04850 | HOHENSTEIN HTTI]

care instructions

Wash before wearing. Hand wash or machine wash cold on a delicate cycle. Do not use bleach or fabric softener. Hang dry — no ironing please!

Thinx Modal Cotton illustration

Modal Cotton

Our buttery-soft Modal Cotton blend of SUPIMA®️ Cotton and TENCEL™ Modal is perfect for feeling *extra* cozy on your period.

I love how soft, flexible, and breathable they are! They are so absorbent and I can wear them all day (without any other protection) and feel confident that there will not be leaks.
Martha from Syracuse, NY, moderate to heavy flow

how our period underwear works

Thinx - PDP - take the Know Your Flow quiz

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Tell us a li'l bit about your flow, and we'll match you with the right pair!

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Mix and match any Thinx undies — and you can save up to 20%.

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FAQs

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