how it works

moderate-flow moderate-flow

holds up to 5 tampons

Our Moderate Mesh Trim Brief holds up to 5 regular tampons’ worth of flow to help keep you feeling comfy, cute, and protected all day. 

super-heavy super-heavy

holds up to 7 tampons

Our Super Heavy Brief holds up to 7 regular tampons’ worth of flow and will be a top drawer essential for your heavy period days. 

overnight overnight

holds up to 9 tampons

Our 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. 


why it’s better

The Proof by Always Difference

Our Proof Powered by Always collection is made with our patented Leak-Loc® layers that, combined with bonded, reinforced edges, help protect you from leaks. These upgraded styles are built to absorb even more flow while helping you feel dry all day or night. Each pair was crafted to help support you no matter how you flow throughout your period week.

who we are

Founded by three sisters in 2020, Proof was built with a mission to provide women with meticulously designed, expertly constructed period underwear. They decided it was time for a different kind of period experience—one where women can feel their most confident during “that time of the month”.

Fast forward to present day, Proof and the forces at Always decided to come together to bring you even better protection with higher absorbency and superior technology. Proof by Always is the period solution that has your back...period.   

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