The offered 280MM Sanitary Pads are made of multiple layers of absorbent materials, such as cotton, wood pulp, & superabsorbent polymers, which can hold a significant amount of fluid. They have an adhesive backing that allows them to stick to the inside the underwear to stay in place during movement. 280MM Sanitary Pads also have wings that wrap around the sides of the underwear to provide extra protection against leakage.