Features: 1) Cotton core series 2) Prolonged type for day use 240mm 3) Top sheet: super dry perforated film 4) Convex cotton core design for your body, super strong polymer mixes SAP, super strong capability to absorb menstrual blood and hold it firmly without leakage 5) Full anti-leakage concave trace design, effective prevention of leakage to any direction 6) Strong breathable bottom membrane for removing hot and humid air, which makes your skin clean and comfortable