Seamless UV Arm WarmersLighter weight than the standard Thermal Warmer collection, Seamless Arm Warmers are perfect to stash in a jersey pocket when you need a little extra protection on a fast descent or for a long climb in the shadows. Material 58% Polypropylene, 37% Polyamide, 5% Elastane Details Thermal yarns feature a brushed fleece interior that insulates, while remaining highly breathable and effective at managing moisture.