Lightweight hydration pack is great for short day trips Comes with 2 liter CycloneT bladder Pack has been constructed with opening that fits around CycloneT easy-grip cap so that bladder does not need to be removed for filling Deluxe padded back with Air WayT cooling system allows air to travel to hard to reach places Elastic adjustable sternum straps for added comfort and flexibility Neoprene sides allow for easy bladder loading Abundant reflective safety tape Capacity...