Speedo's Fastskin FSII uses compression fabric that fights drag and muscle vibration. Features V-shaped ridges that replicate the dermal denticles of sharkskin! The Speedo Fastskin's Flexskin side panel fabric provides swimmers with a full range of motion. Moreover, through computational fluid dynamics testing, Speedo has identified the optimum positioning for the Turbulence Management System, which breaks up water flow and further reduces drag. Speedo's Recordbreaker Back is the best elite, competitive back. The lower back and higher cut offers the ultimate freedom of motion.
FINA approved!