Its time to leakproof your period. Thinx Cotton Lace All Day Briefs period underwear looks and feels like regular underwear, but its designed with built-in period protection thats leakproof all day up to 12 hours. Thinx for All period underwear features an absorbent core layer that absorbs up to 12 regular tampons [KM3] worth of flow, and the moisture-wicking layer helps keep you feeling fresh and dry. Made with breathable cotton, Thinx for All period panties let you go about your day in comfort. From the period experts at Thinx, Thinx For All can be a total replacement for disposable period products or can be worn as a backup to tampons or menstrual cups. Thinx for All period panties are washable and reusable. Machine wash your Thinx period underwear on cold, line dry, and repeat! Not for use on open cuts, abrasions or incisions. Replace at 30 washes.