DeFeet Armskins are designed to provide a guard against the elements in chillier temperatures, making your rides and runs more comfortable. Armskins are engineered with an easy-on, easy-off stretch fit, covering from the wrist to the top of the biceps, and are ideal for cycling, running, and hiking to keep you warm in cold, wet conditions. Recommended for temperatures between 35 and 55. - 49% Recycled Polyester, 48% Nylon, 3% Lycra