Omni-Directional Suspension« (ODS«) technology Shell û A proprietary woven blend of advanced aerospace carbon fiber, composite fiberglass, and Kevlar Rear Delta-Vent û Aids heat transfer by scavenging air Air Flow Management û 8 intake ports, 13 transfer ports, and 4 aggressive exhaust ports Comfort Liner û Genuine CoolMaxÖ anti-bacterial fabric Emergency release cheek pads Shear-away visor screws Sternum Pad û Provides added protection of the chin, jaw and sternum Roost Guard û Provides additional face protection Clavicle Cut-Away û Provides increased clavicle clearance. HLMT ATR1 STEALTH WT XL