Speedo Fastskin3 Hair Management System Black S A unique bonded fabric cap with a non-slip edge specifically designed to hold and shape longer hair. Developed as part of the world's first Racing System, engineering cap, goggles and suit to work in harmony. Shapes hair for significantly improved hydrodynamics compared with short or no hair. Wear under the Fastskin3 Cap for best results. Comfortable and easy to use.