The X-Fifteen features Shoei's Multi-Ply Matrix AIM+ shell construction. Combining a six-ply matrix of fiberglass with lightweight organic and high performance fibers, the shell provides optimal impact absorbtion, strength and elasticity. Designed and refined state of the art wind tunnel facility, the X-Fifteen boasts impressive improvements in all aerodynamic performance mesurables as compaired to its predecessor. Thanks to Shoei's superior shell molding technology, the bottom third of the helmet has been strategically narrowed, and together with updated rear stabilizer and rear flap design, the balance and stability of the X-fifteen is next level. Putting the helmet through its paces in Shoei's in-house wind tunnel throughout development revealed optimal airflow in multiple riding positions, but none more important than the aerodynamic, tucked racing position. Featuring 7 closable air intakes and 6 exhaust outlets, all strategically shaped and located to maximize airflow and negative air pressure suction to the rear of the helmet. Significant improvements have been made to the innovative cheek pad cooling systemby increasing the number of holes delivering refreshing air to the rider's cheek area. Taking a new angle on vision, Shoei engineers revised the eyeport trajectory to increase the upper field of view by 5mm without changing the position of the rider's head inside the helmet. Additionally the lens system is 10% larger than its predecessor and improves lateral field of vision. Equipped with an exclusive two stage shield locking system, providing optimal protection against unexpected shield releases in the event of a fall. A newly designed trigger lock mechanism provides even more assurance by preventing the shield from detaching during a crash. The X-Fifteen is equipped with a fully removable, washable, adjustable and replaceable 3D Max-Dry Custom Interior System II. Exclusive Max-Dry liner material absorbs and dissipates sweat and moisture twice as fast as traditional nylon interriors. Equipped with the Shoei exclusive Emergency Quick Release System that allows emergency medical personnel to easily remove the cheek pads from an injured rider's helmet. Designed for aerodynamic performance Independently adjustable center pad system allows for replaceable sections Multi-density eps liner features improved air tunnels for optimal air cooling Cheekpad cooling ventilation system CWR-F2R racing shield features double shield lock E.Q.R.S. - Emergency quick release system Chin bar designed to accommodate helmet hydration system Meets or exceeds DOT, ECE R22/06 and Snell standards