Welcome to (BTWN)
ThinxWelcome to (BTWN)
ThinxHow do they work?
Our washable, reusable underwear are designed with period-proof technology to help prevent leaks and stains (aka we’ve got their back).
Learn more
Our washable, reusable underwear are designed with period-proof technology to help prevent leaks and stains (aka we’ve got their back).
Learn moreFor orders that are $399 and below (after discounts, not including shipping fees), we are now including all Duties and taxes with shipments.
For orders over $399, we can not cover these costs, sorry!
Unfortunately, our prices don’t include local taxes, duties, brokerage fees, and VATs, all the stuff you may be charged to receive your shipment at home. Make sure you consider all fees, because once your order arrives you’ll be required to pay all additional charges — and we won’t be able to refund you if you change your mind!
We offer $20 expedited shipping on all orders to countries not listed above.
Thinx (BTWN) are true to classic sizing for girls’ underwear and clothing.
Natural Waist
23¾-24½60-62
24¾-25¼63-64
26-26½65.5-67
28-29¼71-74
Lower Waist
27-2868.5-71
29¼-30½74-77
31¾-3380-83
34½-3687-91
Hip
29-30¼73.5-77
31½-3380-84
34½-3688-92
37½-3996-100