The design of this swim cap eliminates the struggle with "stuffing" long hair into a traditional cap. It also relieves pressure and creates less tug during use because there is more room for hair. Contoured design around the ears enhances the cap's comfort. 100% silicone and wrinkle free construction lasts for multiple seasons and will not tear. The streamlined design also reduces drag in the water, helping swimmers accelerate their speed. One size fits most.