Speedo Women's Fastskin II
The Speedo Fastskin II fabric surface mimics the rough shark denticles to reduce drag along key areas of the body.
FLEXSKIN – This smooth surface material allows greater flexibility and less drag. Just like the shark’s skin, Fastskin and Flexskin were positioned to accommodate the changing flow conditions along the swimmer’s body to create the most advanced and lowest drag racing swimwear in the world to date – FASTSKIN FSII.