Gmax GM64 Derk Modular Street Helmet (Flat Black/Silver, Small) Features an all new "Perimeter-Frame-Design" that provides unequaled wind protection. The perimeter frame design allows for one constant sealing surface for the shield and jaw to help keep the unwanted wind noise out "Dual Pivot" modular jaw design allows the flip jaw to rotate further back and low on the crown of the helmet, increasing the line of sight when in the raised position and it lessens fatigue by maintaining an even distribution of weight across the helmet Controls for the inner sun shield are located on the left side and is easy to operate with a gloved hand, as is the "squeeze & lift" jaw release design State of the Art anti-fog, anti-scratch hard coated outer lens for a longer lasting clear view that is UV400 coated which allows 100percent UV protection Coolmax comfort liner and cheek pads move the moisture away from your head and is fully removable, washable, and adjustable allowing a comfortable and customizable fit