The ZANheadgear SportFlex(tm) Series provides comfort and warmth. We've added functional reflective tape for visibility and safety on all of your adventures. Flat seams in order to fit comfortably underneath helmets or alone while providing coverage of the head and ears. Fabric is brushed for ultimate softness and has a 4 way stretch for customizable fit. 50 UV Protection. Materials: 87% Polyester, 13% Elastane.