The FS3 Competition Swim Cap is the world's first cap featuring the IQ Fit Profile and designed using accurate head mapping data; creating optimum comfort, outstanding hydrodynamic performance, improved fit and ease of use. FINA approved. Reduces drag by 5.7% if used in conjunction with Fastskin Goggles Solid coloured cap with back center graphic. Developed as part of the world's first Racing System, engineering cap, goggles and suit to work in harmony. First true 3D cap created by Speedo Aqualab and based on accurate global head scanning data. Designed for real head and face contours. Improved drag reduction, comfort and fit accuracy. Striking iconic design is cohesive across suit, cap and goggles, making a statement to your opponents. 100% Silicone