If it ain’t broke, then don’t fix it. The .357 by HIGHWAY 21 embodies simple style and function of the classic half helmet by focusing on strong durable materials mixed with a little HIGHWAY 21 flavor. A timeless design to serve day in and day out that will not spoil your seat time. Buy it, throw it on, log miles. Durable lightweight ABS shell. EPS (Expanded polystyrene) interior. Diamond stitched Coolmax® liner. Washable and replaceable interior. Dual D-ring chinstrap. Protective helmet bag. D.O.T. approved.