adidas Performance Men's F10 TRX Firm-Ground Soccer Cleat 100% Synthetic Imported Rubber sole Fast goes full speed in this F10 boot designed for firm ground pitches this lightweight boot has a soft synthetic upper and a new speedtraxion outsole that gets you to the ball first Soft and high abrasion resistant bravo synthetic material for high durability Speedtraxion offers high-speed stud alignment for maximum acceleration and quicker turns