Matte Polycarbonate and Advanced ABS Composite outer shell; Injection molded shell design; Washable quick-dry, moisture wicking, anti-microbial liner; Stainless steel mesh; Comfort padded harness with synthetic suede lining, hook & loop adjustment, and Fastex buckle; Two side, two front, one back, and two center stripe vents; Advanced technology and aesthetically pleasing design; ASTM/SEI F1163-15 certified; Offered in oval and round shapes for a great fit