45-day trial
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Modal Cotton
Modal Cotton Boyshort
$38
Thinx underwear is not made or treated with PFAS
45-day trial
+ free returns
Don’t love 'em?
Get your $ back
no Qs asked
Thinx underwear is not made or treated with PFAS
absorbency super
holds5worth.
regular tampons'
regular tampon
menstrual cup
pantyliner
regular pad
mL
teaspoon
colorSlate
size
size chart
buy 3, save 10%
buy 3, save 10%
style
A full-coverage style with a little extra length in the leg, made from eco-friendly Modal Cotton that's breathable & buttery-soft.
Thinx underwear is not made or treated with PFAS.
fit
This style has an extended gusset for extra coverage and fits true to size, so we recommend ordering your usual size.
This cozy style is built to handle your heaviest days, and the fitted leg makes it perfect for overnight wear.
fabric
- body/liner: 53% SUPIMA® Cotton, 35% TENCEL™ Modal, 12% elastane
- gusset 1 (wicking): 100% polyester
- gusset 2 (absorbent): 100% polyester
- gusset 3 (barrier): 100% polyester, coated w/ breathable PU
- polyester, 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!
Modal Cotton
Our buttery-soft Modal Cotton blend of SUPIMA®️ Cotton and TENCEL™ Modal is perfect for feeling *extra* cozy on your period.
They’re breathable, don’t fit too tight, and I appreciate having a gender neutral option.Robin from Jersey City, NJ, light flow
how our period underwear works
find your style
Tell us a li'l bit about your flow, and we'll match you with the right pair!
buy more, save more
Mix and match any Thinx undies — and you can save up to 20%.