When your day's plan calls for scrambling, running, hiking, or just generally moving quickly in the outdoors, make sure you bring along the Ultimate Direction Race 5. 0 Hydration Belt for a minimalist hydration solution. Regardless of how fast, flat, or vertical you get, the Race 5. 0's Flex Mono Mesh dual compression waist belt provides a secure and breathable fit, while the MonoRip mesh backpack conforms to your every move. The main pocket has room for your smartphone and a UD Body Bottle 500, while the hidden key pocket safely stows your car or house key. Plus, individual compression bungee bands add extra attachment points.