The UD Ultra Belt hits the sweet spot between running vest and hand-held water bottle. With two 500 ml soft bottles (included), this belt carries more water than you'd want in your hands, but weighs less and provides better ventilation than a full vest. The zippered middle pocket has room for your phone, snacks, and a lightweight extra layer. The mesh waist belt is super comfortable and breathable. A small Velcro pocket on the front strap holds a car key or other small items. Hit the trail up to Pine Creek Pass with plenty of water and your essentials in the Ultra Belt.