The Proof. by Always Super Heavy Brief holds up to 7 regular tampons’ worth of flow and will be a top drawer essential for your heavy flow period days. This period underwear for women offers a classic mid-rise fit and a super-soft, stretchy feel that is invisible under clothing when you need it most, making it an ultra comfy staple in your period care routine. The barely-there design and big time absorbency helps keep you protected, dry, and confident. Proof reusable period underwear for women is up to 100% leakproof and offers up to 12 hours leak protection with a built-in super absorbent core to pull fluid away from your body. Proof period underwear for women is designed with patented Leak-Loc technology that was further developed in partnership with the makers of Always. Meticulously designed and expertly constructed with 4 Leak-Loc layers, these period underwear for women really go with the flow so you can live your life with confidence on your period. Another great plus, Proof period underwear for women is washer and dryer friendly. Simply toss your worn period panties in the washer and dryer with rest of your laundry, and you're ready to go! Leak Proof. Worry Proof. Gush Proof.