The GripGrab Aviator Windproof Deep Winter Skull Cap provides you with reliable protection from the elements even in the lowest winter temperatures. With its long ear flaps and low-set back of the head, it is perfectly tailored to cold weather conditions. The fabric is not only soft and comfortable, but also windproof at the front, which guarantees efficient heat-insulating properties. Despite its protective functions, the knit caps offer outstanding breathability and can easily be worn under a helmet.