100% cotton. 5% spandex prevent accidents with leaking through during periods, post partum & incontinence. Absorbant thin cotton fibers added to the crotch & back absorbs accidents b4 leaking to your clothes. Use with pads, tampons or diva cups This is for 3 pair of the Butterfly design. These dont fit like granny panties! They're the fav's of the young ladies in my family!see size chart for your perfect fit I consider these necessities. Please contact me if you or someone you know is in need!