Ready to period-proof your nighttime routine? The Proof. by Always Women’s Overnight High Rise Brief holds up to 9 regular tampons worth of flow so you can get the worry-free sleep you’ve been dreaming about! These undies offer maximum absorbency with a super slim lining, you’ll barely know leak protection is in there! Meticulously designed and expertly constructed with 4 Leak-Loc layers, Proof reusable period underwear really go with the flow, no matter how you sleep. Leak Proof. Worry Proof. Sleep Proof.
- UP TO 100% LEAKPROOF: Proof women’s reusable period underwear is designed with a built-in super absorbent core to pull fluid away from your body.
- POWERED & TESTED BY ALWAYS®: Proof’s patented Leak-Loc technology was further developed in partnership with the makers of Always.
- OVERNIGHT ABSORBENCY: The Overnight High Rise Brief holds up to 9 regular tampons and features front-to-back leak protection for worry-free nights no matter how you sleep.
- FITS & LOOKS LIKE EVERYDAY UNDIES: The brief style is an essential for your period days with a classic mid-rise fit and a super-soft, stretchy feel that is invisible under clothing.
- WASHER & DRYER FRIENDLY: After wearing, machine wash cold on delicate cycle. Tumble dry low or hang to dry. Proof undies are made to last and designed for over 3 years of wear!
- FIND YOUR PERFECT PROOF FIT: Reference the Proof Fit Guide to learn more about sizing, fit, and available styles.








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