MINIMAL DESIGN, MAXIMUM FUNCTION: Running belt is crafted with extended side panels hug the body comfortably for a perfect fit. This running belt lets runners bring their essentials without getting in the way of your active lifestyle. CAPACITY: 18 oz/535 ml Speed Draw Flask with push/pull Race Cap, Expandable zippered stretch pocket keeps essentials protected. The running belt is functions as a running water bottle belt to keep you hydrated on runs, walks or hikes. INSPIRED BY THE JOURNEY: Nathan's collection of running essentials including a fanny pack and Nathan running water bottle delivers on comfort, quality, and smart storage to enhance performance, mile after mile and year after year. STYLE AND SAFETY: Reflective detail and trim on this running belt helps you be seen in dim light, without sacrificing a sleek, aesthetic design. SIMPLE HYDRATION: Running hydration belt features an angled insulation bottle holder, allowing easy, one-handed access on the track, or trail. Easy to store and release from the running belt and so the water bottle stays in place without bouncing.