Heavily vented for maximum cooling This is the lightest TekVest available For offroad riders looking for the best in full side and frontal coverage Designed to be worn over/under a jacket Wear your current backpack over top of this design Rear armor foam panel removed to increase air flow while wearing a backpack Traditional TekVest UHMW plastic back panel retained profile raised and ventilated No other TekVest made flows this much air Neck brace compatible Will accept the standard optional TekVest shoulder pads