Medium Absorbency: absorbs about the same as 3-6 tsp, 1-1.5 regular pads, 2-3 super tampons, or 0.5-1 menstrual cups; ideal leakproof swimwear bottoms for moderate flow period days, as well as protection against light bladder leaks and sweat. Full Front and Back Coverage: confidently wear and swim in your absorbent period swim bottoms with maximum bum coverage, a wide waistband for comfort, a breathable mesh interior lining, and a super discreet leakproof liner. UPF 50+: protect your skin from the sun all day long with your menstrual swimwear bottom that is as thin as regular swimwear and does not swell in water. Machine Washable: Machine Washable and Reusable with Knix’s FreshFix Technology Gusset, containing 3 layers of performance fabric that keep you fresh and dry with rapid absorption. About Knix: with 10+ years of experience, Knix's products are lab-tested and wear-tested. Knix was launched to to transform an underwear market that had too much frill and not enough function. Teen-Friendly Sizing: Our most-popular swim style! Ideal for teens seeking full coverage in front and back, with full period protection. Wear alone on lighter days, or with a tampon or menstrual cup on heavier days. Layer 1: A smooth, skin-comfortable top layer. Layer 2: Highly-absorbent middle layer, leakproof, absorbs like 2-3 super tampons. Layer 3: Waterproof outer layer to prevent swelling. Features: - Maximum bum coverage - Wide, comfortable waistband - Mesh interior lining - Discreet liner - 50+ UPF protection