The Arcteryx Norvan 14 Vest is a streamlined running vest to keep you moving fast on long trail runs and ambitious hikes, the Norvan 14 comfortably carries your mountain running essentials; spare layers, food, maps & water. For those venturing into more technical terrain it even has carry options for a climbing helmet and ice axe. It's light, durable stretch mesh pack cloth wraps contents tight to minimize bounce. There are easily accessible multiple front pockets including two flask holders (500ml flasks are included). Dump pockets at the top and back are sized for larger gear. Arcteryx Norvan 14 Vest Features 210d Cordura nylon Stretch mesh pack cloth Multiple adjustments for an exceptionally precise, comfortable, balanced fit Rear pocket for smaller items Front pockets include two flask holders Two dump pockets One zippered pocket Top dump pocket Helmet carry option Single ice axe carry Two Arc'teryx 500ml flasks included Embedded RECCO reflector Reflective Arc'teryx logo Weight:421g Your Chest Size:38.5 Inches - Medium43.5 Inches - Large Choose the closest to your measurements. Arcteryx Norvan 14 Vest