SPEEDO FSII Zip Front Tank Top SPEEDO FSII Zip Front Tank Top SPEEDO FSII Zip Front Tank Top SPEEDO FSII Zip Front Tank Top SPEEDO FSII Zip Front Tank Top SPEEDO FSII Zip Front Tank Top SPEEDO FSII Zip Front Tank Top SPEEDO FSII Zip Front Tank Top SPEEDO FSII Zip Front Tank Top SPEEDO FSII Zip Front Tank Top SPEEDO FSII Zip Front Tank Top SPEEDO FSII Zip Front Tank Top SPEEDO FSII Zip Front Tank Top SPEEDO FSII Zip Front Tank Top SPEEDO FSII Zip Front Tank Top SPEEDO FSII Zip Front Tank Top SPEEDO FSII Zip Front Tank Top SPEEDO FSII Zip Front Tank Top SPEEDO FSII Zip Front Tank Top SPEEDO FSII Zip Front Tank Top SPEEDO FSII Zip Front Tank Top SPEEDO FSII Zip Front Tank Top Fastskin FSII, the most advanced and lowest drag racing swimwear in the world to date, is now available for multisport activities. Fastskin FSII is a hybrid of two highly specialized Speedo exclusive fabrics, Fastskin and Flexskin, to accommodate different flow characteristics across the body and reduce drag through the water, up to 4% decrease compared to original. Fastskin fabric mimics the rough shark denticles to reduce drag in key areas and features a Turbulence Management System. Greater stretch for better fit and movement. Thread feels softer against the skin. Fabric: 81% Nylon/19% Lycra spandex. Import.