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Nothing can hold your swim star back when he's wearing the FINA approved Speedo® FSII Jammer. This suit features Fastskin® technology to reduce drag in key areas and features a turbulence management system. The muscle compression components reduce muscle vibration which in turn help save energy and reduce drag. He will surge to the finish line with the Speedo® Boys' FSII Jammer.
FINA approved as of January 2010
Fastskin® FSII is advanced and low drag
Fastskin® fabric mimics the rough shark denticles to reduce drag in key areas and features a Turbulence Management System
Muscle compression components reduce muscle vibration to save energy and reduce drag