Classic

Final Sale 50% off

Boyshort

Original Price

£37

Sale Price

£18.50

Thinx underwear is not made or treated with PFAS

Thinx underwear is not made or treated with PFAS

absorbency moderate

3 out 7 droplets
holds up to
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 full-coverage style with a little extra length in the leg for flexible, reliable leak protection.

Thinx underwear is not made or treated with PFAS.

fit

This style has full gusset coverage and fits true to size, so we recommend ordering your usual size.

Thinx - Boyshort - Style+Fit.jpg
The fitted leg makes this style perfect for overnight wear, or for when you want to feel extra comfy on moderate flow days.

fabric

  • body: 84% polyamide, 16% elastane
  • body liner: 95% cotton, 5% elastane
  • gusset 1 (wicking): 95% cotton, 5% elastane
  • gusset 2 (absorbent): 96% cotton, 4% elastane
  • gusset 3 (barrier): 100% polyester, coated w/ breathable PU
  • SUPIMA® Cotton, elastane, polyester, polyurethane, Nanotex® wicking agent, Agion®
  • 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 Classic illustration

Classic

Stylish silhouettes featuring seasonal colors and lace & mesh details in a silky-smooth fabric. Available in all 5 absorbencies for every type of flow.

As a trans person, it's so affirming to know I can keep wearing a masculine style of underwear when going through something so difficult.
Leo from Newcastle, UK, light flow

how our period underwear works

Thinx - PDP - take the Know Your Flow quiz

find your perfect pair

Take our short quiz to get matched with undies that suit your style and needs.

Thinx - PDP - create a set

buy more, save more

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

FAQs