Features Tough ABS shell meets NOCSAEtm standards Geared for a custom fit and supreme comfort 3 tiered comfort foam padding made of the best materials durable EPP foam for excellent shock resistance and open cell foam that conforms to your head and provides comfort Both the open cell foam and the EPP foam are wrapped with Wilsonr moisture management lining Aegisr anti bacterial coated lining Controlled air venting design strategically reduces weight while maintaining optimal safety and durability