Swim fasters & smoother in the Speedo Fastskin Cap which is designed using global head data for an accurate fit & feel. This vibrant cap is part of this seasons looks & is FIINA approved. Features FINA Approved The first true 3D cap created by Speedo Aqualab & based on accurate global head scanning data Designed for real head & face contours enhanced drag reduction enhanced comfort enhanced accuracy of fit If you have long hair, we recommend you wear with the Hair Management System (worn under the cap) 100% Silicone