This is a sanitary napkin with an innovative structure, original technological instant-absorbent material, and a composite design of two cores. It can be absorbed in seconds without any obstruction. The reverse osmosis barrier structure can keep the skin dry. There are diversion grooves on both sides of the towel body, which can drain menstrual blood into the absorbent core for rapid absorption. The Y-shaped tail is more suitable for the human body structure, actively fits the private parts and is not easy to shift, effectively preventing side leakage. The separated and suspended design of the side wings of the core body reduces leg friction and helps users optimize the comfortable and painless experience during menstruation.