The origins of Ultimate Performance products are in the development with elite runners & triathletes. The products are tested & enveloped in a host of different environments to ensure they provide everything needed for demanding users. A 650 m. hydration bottle with soft-teat cap inside a fully insulated, angled bottle holder, this system also features an angled bottle position to make it as practical to use as possible. There is a zipped pocket for small essentials & padded, moisture-wicking backing for additional comfort. Fits 26 in. to 42 in. waist.