Santic Cycling Leg Warmers Thermal Fleeced Wind Proof Soft Shell Knee Warmer Black polyester fiber 85% Polyester, 15% ElastaneAutumn/Winter Windbreak Adequate Elasticity and Breathable Optimize of the line structure, three-dimensional tailoring process, bring about smoother air flow, reduce wind resistance Knee warmers made with windstopper soft shell material to keep out the cold and wind