The Speedo FSII Jammer is our most popular selling of all elite racing swim jammers. Made from advanced fabric the Speedo FSII Jammer has the lowest coefficient of drag resulting in a 40% decrease in drag compared to the Original Fastskin fabric. The Fastskin fabric mimics the rough shark denticles helping to reduce drag in key areas of the body. The Speedo FSII Jammer helps to compress the muscles, reducing muscle vibration and muscle oscillation to save energy and reduce drag.
Features Include:Fina Approved Drawstring waistband Fabric: 74% POlyester/ 26% Lycra Spandex
Features Include:
