The GripGrab Skull Cap Windster is a soft, lightweight and insulating cycling cap with a wind-proof front. The cap protects your ears and forehead, and fits underneath your helmet perfectly. Ideal for cycling, running, and other activities in cold weather. The top of the Windster is made using a soft, brushed techno-fabric with excellent thermal insulating properties while maintaining breathability. The multi-panel design, flat stitches and soft materials ensure a perfect combination of fit and comfort.