Designed for runners and walkers alike, this low-profile hydration system offers a sleek, nonbulky fit and ultralightweight feel. 1"-wide belt with adjustable buckle for a custom fit. Perforated-foam back panel for comfort. Includes 21-oz. CamelBak bottle. One size fits most. Imported. Storage capacity: 50 cu. in. Water capacity: 21 oz. Weight: 7.1 oz. (empty). Color: Black.