Now, you can do away with those bulky water bottles while racing the trails on foot or on a mountain bike. Hydration packs are specially designed to carry as much as three to four liters of liquid in one bladder. The bladders are made from high quality durable vessels that are attached to a drinking hose.

A hydration pack protects the bladder from abrasion with its thick foam pads. It also acts as an insulator and comes with shoulder straps so you can carry it on your back. It can moreover be inserted in bigger packs that have hydration pockets.