Created by Speedo Aqualab and based on accurate global head scanning data, the Speedo Fastskin Cap is the first swimming cap to feature the IQfit™ Profile and does an excellent job of reducing drag while providing great comfort and an accurate fit that adapts to the contours of your head and face. Designed to be used alongside the Fastskin goggles and suit for the ultimate water racing system, with the goggles used in conjunction with the cap to reduce drag up to 5.7%. For the ultimate in speed and optimum comfort, this is the performance swimming cap for you.