Description Specification Size Chart Fleece arm warmer featuring flatlock stitching ideal for cool weather conditions... training rides or early morning race starts.CS WinterFleece „ is an incredibly lightweight and warm brushed fleece. It's a single-sided fleece, which means that only the inside of the arm warmer is fleece-lined. The outside has a smooth finish for improved aerodynamics. CS WinterFleece „ fabric - Thermal "Roubaix" lycra with brushed fleece lining and high stretch for maximum movement. Flatlock exposed stitch for improved fit and comfort. Designed to fit under your jersey sleeves. Silicone grippers for even better comfort and fit around the bicep. Hides discreetly under your jersey sleeves. Size Wrist (cm) Bicep (cm) XS 15 28 S 16 30 M 18 33 L 19 35 XL 20 38