... CapsThere are several kinds of swim caps on the market, including latex, Lycra, and silicone. Silicone caps are popular with swimmers at ... hydrodynamic, providing swimmers with an alternative to latex and Lycra.Although latex caps are cheaper, silicone doesn't affect people with ... . Also, silicone hats will keep your hair dry, unlike Lycra caps. The best of both worlds, silicone swimming hats are also ...