More comfortable than latex, more stretchy than a standard silicone cap, this is the best of both worlds... or so we think. Made of a thinner, flexible silicone it offers great stretch, with none of the hair pulling annoyance of latex with a tight fit that does not slip.Please note: this cap is available in one size, which is slightly smaller than a regular latex cap. It may not work well for folks with very large heads or long, thick hair.