These period panties feature a four-layer lining with soft fabric, an absorbent core, a waterproof barrier, and a breathable crotch layer for reliable leak protection. The full-coverage design helps prevent side and back leaks and stays comfortable day or night. The absorbent core locks in moisture and holds up to 20 ml of menstrual flow, about the equivalent of 4 regular tampons, helping keep you dry and protected. Reusable and comfortable for periods, postpartum recovery, light bladder leakage, or as backup protection with pads, cups, or tampons.