SPEEDO Aquablade Boy's Jammer Tech Suit Swimsuit Youth -FINA approved style Fully compliant with FINA regulations. -Exclusive to Speedo®. Unique Aquablade fabric offers lower drag co-efficient and is slicker than skin! -Stripes create channeling effect to streamline water away from the body. -Longer legs for added coverage and compression fit. -Drawcord waist. Superior, chlorine-resistant 80% Polyester/20% Lycra® spandex.