Hydration backpack backpack capacity 13 liter pack volume 3 litre applications running trail running cycling materials 230 d taffeta 420 d nylon suitable for women men chest straps with chest strap adjustable hip belts with waist strap with pockets adjustable carry handle top outside pockets front pocket special features padded back reflective print expandable capacity signal whistle fastener zip series camelbak octane weight 045 kg height 44