SKINS Bio Sport Compression Powersox - Black with Yellow Stiching - XXSmall 76% Nylon, 24% SpandexTurbo charge your legs. Increased delivery of oxygen-rich blood gives you increased speed, power and endurance, while reducing the buildup of lactic acid.Rock-solid base: Focused muscle support improves stability and muscle alignment while engineered gradient compression delivers more oxygen-rich blood to calf muscles.Cold machine wash, gentle cycle, with like colors. Do not bleach, iron, or tumble dry.ection to the aerodynamic R4 Aero to a wide range of off-road treads, Bontrager has a tire to handle it all. SHIPS TO CANADA AND USA New old stock (will ship to other countries with tracking number only, please ask)