The LS2 MX436 Pioneer Evo Evolve Off-Road Racing Motorbike Helmet is packed with features... Specifications Include: Shell KPA (Kinetic Polymer Alloy) - A blend of polycarbonate, space age thermoplastics and additional materials Oval 3 Shells Ventilation Channeled EPS Multiple Exhaust Ports Multiple Top Vents Chin Vent Visor Visor - LS2 visors are built with 3D Optically Correct "A Class" Polycarbonate, a space-age polymer with high resistance to impact, that avoids distortion and offers maximum clarity. Twin Shield System - LS2\'s drop-down sun shield helps protect the rider\'s eyes from bright sun, and moves up and out of the way quickly and easily when entering dark tunnels, offering a more comfortable riding experience. Scratch Resistant - Surface treatment of the visor against small abrasive impact. UV Resistant - Treatment of the visor with UV-free clear coating. Pinlock Max Vision Ready Security Micrometric Buckle Emergency Release System Reinforced Chin Strap Metal Security Plate Multi-Density ESP Comfort Removable and Washable Liner Breathable Chin Curtain Hypoallergenic - Manufactured using hypoallergenic technical fabrics that wick moisture to help keep you cool while you ride. Laser-Cut Foam Weight - 1350 +/- 50 gr ECE 22.05 Certified ACU Approved 3 Shells: 2XS-3XL