GripGrab Aviator Windproof Deep Winter Skull Cap Made from highly insulating fleece with a windproof front panel, the Grip Grab Aviator Skull Cap offers an exceptional warmth-to-weight ratio, providing serious thermal protection without unnecessary bulk. Its low-profile construction and flat seams ensure a comfortable fit beneath your cycling helmet. The contoured design extends coverage around the ears and lower back of the head, delivering targeted insulation where it’s needed most in freezing conditions. Despite its impressive warmth, the fabric remains highly breathable and moisture-wicking, helping to regulate temperature and prevent sweat build-up during harder efforts. Whether you’re tackling long winter training rides, commuting in sub-zero temperatures or heading out for endurance miles in icy conditions, the GripGrab Aviator Windproof Deep Winter Skull Cap is the ultimate cold-weather cycling companion to keep you riding further, longer and in greater comfort.