Lightweight, breathable Wall Mesh with soft perimeter binding - feels great against skin and won"t damage technical apparel * Vertically adjustable sternum strap; simple, lightweight side compression straps * Dual front essential pockets - one carbo-gel holster, 1 zippered * Power Stretch Mesh back pocket for stowing jacket, gloves, and/or sleeves * Weighs only 4.5 ounces