Highway 21 .357 Helmet The Highway 21 .357 Half Helmet is lightweight, with a low profile design. The drop down sun visor is a great feature that makes it stand out among the competition. Made from a durable polly alloy, the .357 helmet comes in 2 different shell sizes to give you the right amount of protection no matter the size. Features Removable and washable comfort liner and cheek pads 100 Uva/B protection up to 400 nanometers Tinted drop down inner sun visor Anti fog coating and durable hard coating for scratch resistance on the visor Durable and lightweight poly alloy shell 2 shell sizes D.o.t. approved