We’ve got you covered from your lightest to your heaviest day. Learn more about our absorbency levels below!

Our technology features absorbent layers that have you covered from your super light days to your heaviest, and every day in-between.
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regular protection
A multi-layer leakproof absorbent core that features our Leak-Loc® bonded edge technology.
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Extended protection
Front-to-back lining featuring an additional waterproof layer for maximum protection. A multi-layer leakproof absorbent core with our Leak-Loc® bonded edge technology.
If you want, simply add a few drops of vinegar or tea tree oil to your washing machine during the rinse cycle and complete washing as normal.
The Hipster features our super-absorbent core that holds up to 5 regular tampons and front-to-back protection—great for overnight!
Other heavy flow favorites: The Bikini and The Mesh Hipster.
Depending on your chosen absorbency level, our leak-resistant and leakproof styles can hold anywhere from 1 light tampon to 5 regular tampons' worth of liquid.
You may also feel more comfortable using Proof® undies as a backup to a menstrual cup or tampon.