The Endura FS260 Pro Thermo Arm Warmers are designed to keep you protected, with as little fuss as possible. Thermoroubaix® with DWR M™ is a luxurious, high stretch thermal fabric - it provides comfortable insulation and features the PFC Free DWR M™ treatment for excellent and eco friendly water repellencey. Endura FS260 Pro Thermo Arm Warmers Features Luxurious Thermoroubaix® fabric with PFC Free DWR M™ treatment provides insulation, comfort and water repellency Double sided silicone gripper holds warmers and sleeves in place Reflective trim Endura FS260 Pro Thermo Arm Warmers Materials Nylon 55% / Polyester 28% / Elastane 17%