The ICON Alliance GT is taken straight from the playbook of one of the most legendary models, the Dark Alliance. With a long oval headform, this shell is constructed of injection molded polycarbonate for durability and maximum strength. This shell was also wind tunnel tested and refined to make sure they got the shape just right. The addition that makes this Alliance GT helmet different from its predecessor is the internal interchangeable Dropshield. ICON realized that having two shield options in one helmet without having to stop and change anything was a brilliant idea and they were right! Riders can have the clear shield on all the time, but when the sun becomes an issue, a quick flip of a switch and the Dropshield appears. The fog free clear Proshield has a Prolock shield locking system to make sure it stays down during higher speeds and also comes with sideplates for a streamlined, smooth look. With all the amazing features the Alliance GT has, this will quickly become your favorite helmet. Injection molded polycarbonate shell Wind tunnel tested 5 Intake ports 5 Exhaust ports EPS liner Hydradry moisture wicking liner Removable and washable liner Fog free shield coating Long oval head shape Meets or exceeds D.O.T. and ECE standards