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mint chip underwear style
girls lying on grass.
fresh start period kit

Welcome to
Thinx (BTWN)

If you’re prepared, they’re prepared. And what better way to prep them than with our most refreshing color, Mint Chip? Shop Mint Chip in all of our styles, now in our highest absorbency!

Reusable underwear that absorbs their period, so they don’t have to worry about leaks getting in the way of living their life!

Our best-selling Fresh Start Period Kit — with a twist! Shop the updated Kit, featuring undies more absorbent than ever.

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Welcome to
Thinx (BTWN)

If you’re prepared, they’re prepared. Shop Mint Chip in all of our styles, now in our highest absorbency!

Reusable underwear that absorbs their period, so they don’t have to worry about leaks getting in the way of living their life!

Our best-selling Fresh Start Period Kit — with a twist! Shop the updated Kit.

How do they work?

Thinx (BTWN) absorbs your period, prevents leaks and stains, and keeps you worry-free.

Learn more

How do they work?

Thinx (BTWN) absorbs your period, prevents leaks and stains, and keeps you worry-free.

Learn more

Try Thinx (BTWN) for 60 days and if they don’t help you period better we’ll give you a refund — no questions asked!

FAQs

( Q )
Are Thinx (BTWN) reusable?
( A )
Yes! Our period underwear is washable and reusable. Plus, they’re easy to wash, and when cared for properly can last up to 2 years.
( Q )
Are Thinx (BTWN) a replacement for other period products?
( A )
On light days, wear Thinx (BTWN) instead of pads and panty liners. On heavy days, wear ‘em as a backup to other products for extra protection.
Got more Qs? We’ve got you covered.
More FAQS