TAG adjusts to your head on two axis's, firstly for head circumference and then horizontally to better accommodate the position of your occipital lobe, (the sticky-out bit on the back of your head!) For extra comfort the TAG arms are co-moulded with soft rubber resulting in the most adjustable, comfortable and easy-to-use fit system ever. Deeply sculpted ventilation channels on the interior of the helmet liner brings cool air in through the front, passes it over the head and flushes warm air out of the rear ports to keep the air moving no matter where you are riding.