The Margo is a clean and simple mid-rise bikini style made with a 15" leak proof gusset. Medium Protection: Great on its own for medium to light days or mid to end of cycle. Can also be used as back up for other menstrual products on heavy days for added protection. Heavy Protection: The bamboo fleece pad in our Heavy protection pairs hold up to 45ml of liquid so you can feel confident and protected. Both Medium and Heavy options have a 15" leak-proof inner layer so they can be slept in, but it is not recommended for heavy nights. Note: Each pair of Revol underwear is hand-made in Vancouver Canada.