45-day trial
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Get your $ back
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Classic
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 heavy
regular tampon
menstrual cup
pantyliner
regular pad
mL
teaspoon
size
buy 3, save 10%
buy 3, save 10%
A full-coverage style with a little extra length in the leg for flexible, reliable leak protection — even on heavy days.
Thinx underwear is not made or treated with PFAS.
This style has full gusset coverage and fits true to size, but we recommend sizing up if you want a li'l extra room in the leg.
Our underwear is certified according to STANDARD 100 by OEKO-TEX:registered: [20.HUS.04850 | HOHENSTEIN HTTI]
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!
Stylish silhouettes featuring seasonal colors and lace & mesh details in a silky-smooth fabric. Available in all 5 absorbencies for every type of flow.
These are so comfy, you can’t even tell they are underwear. I go running wearing just these. I’m getting more!Elizabeth from Fargo, MD, moderate to very heavy flow
Tell us a li'l bit about your flow, and we'll match you with the right pair!
Mix and match any Thinx undies — and you can save up to 20%.