US Patent 9681697 Helmet

A helmet includes the first pad in contact with an occipital region of a rider, and each of the second pads in contact with the cheeks of the rider. Since the first pad moves from the first occipital region-contact position to the second occipital region-contact position as well as the second pad moves from the first cheek-contact position to the second cheek-contact position, the helmet is moved relative to the rider's head by a predetermined distance.