Evolved. Refined. Perfected. Icon has never been satisfied with the status quo - which is why we created the new Icon Alliance helmet. Based on the proven Alliance SSR, this nexgen helmet is fitted with a multitude of key revisions. The first revision is the new EPS liner. We've listened to the customers requests and reshaped the EPS liner into a more oval geometry. This new headform increases rider comfort by slightly elongating the entire inner circumference. Combine this geometry with our removable Hydra-DryTM wicking comfort liner and the the result is a nearly perfect rider focused enclosure. To further increase rider comfort we've revised the entire venting system. Much like a finely tuned motor, we've reshaped and enlarged the intake and exhaust ports for increased airflow. Additional ventilation ports have also been added to the lateral aspect of the helmet to further increase ventilation. The shield itself has been upgraded to Icon's distortion free Pro-ShieldTM. The ProShield features the ProLock shield locking system, graphic enabled sideplates, fog free coating, and a no-tools shield change interface. Continuing with our commitment to excellence, the Alliance is constructed with premier manufacturing processes and stringent quality assurance procedures. This, combined with rigorous testing, assures that the Alliance meets or exceeds the highest safety standards in the world