Engineered with an easy-on, easy-off stretch fit, covering from the wrist to the top of the biceps, DeFeet's Armskins are an essential component in a cyclist's riding kit, keeping you warm in cold, wet conditions. Recommended for temperatures between 40° and 60°, the SL Armskin is designed to guard against the chillier temps to make for a more comfortable ride. Easily stows in jersey pocket for quick access. See Fit Tip to dial in size.