Okay, so while these aren't strictly a workout legging, these leak-proof shorts actually feature built-in bike shorts for extra security and comfort. The PUMA x ModiBodi 1 in 1 Active Short is breathable, fast-drying, and are the ultimate solution for exercising on your period. They're available in black with neon detailing in sizes 8 to 18, and hold up to 15ml, or 2-3 tampons-worth of blood.
Image Source: Modibodi