Amphipod PureRun Minimalist Vest 32oz Hydration Belts & Water Bottles : The Amphipod Purerun(TM) Minimalist Vest is the newest in Wearable Endurance(TM) Hydration. This ultra lightweight vest features a breathable, Free-flow Air Mesh(TM) construction for optimal cooling on even the hottest runs. Built-in pockets provide easy-to-reach storage for hydration, nutrition items, and other on-the-go essentials. This vest includes a storage pouch with enough space for hydration bladder systems from 1L to 2L in capacity. Features a cinch-fit stability-optimizing design that allows for unisex sizing. Features an ergonomic soft-contoured construction. Includes 2 expandable, multi-use mesh-zip upper pockets to hold plus-sized phones. Includes 2 lower flask or nutrition pockets. Comes with two 16 oz. (32 oz. total) Hydraform(TM) bottles.