Relentless Performance and StyleThe Syntax combines a touch of European flair with slightly deeper coverage and high-performance features - all tucked into a very slim design. The outer shell is molded from a tough polycarbonate that’s fused permanently to the EPS foam liner using our In-Mold construction process to enhance durability and ventilation without excess bulk. The fit is luxurious and secure, thanks to our highly adjustable Roc Loc 5 Air system that allows you to customize fit/feel for great stability and long-range comfort. Key Features:Vents: 25 Wind Tunnel vents with internal channeling ,Construction: In-Mold polycarbonate shell with EPS linerFour-piece polycarbonate interlocking Hardbody shellFit System Roc Loc 5 Air ,CoolFit anti-microbial padding,Featherweight webbing with Slimline buckle.