Features: Podium Dirt Series 21 oz bottle included Air Support Back Panel with Body Mapping Technology for maximum ventilation Secure zippered pocket for easy-access essentials Integrated carry pockets for tool and repair kit organization Elastic pump loop for streamlined gear storage Reflective accents for enhanced visibility in low-light conditions Additional Details: CamelBak Products, LLC ("CamelBak") has built its reputation by engineering products that exceed consumer expectations for quality and durability. The Got Your Bak(TM) Lifetime Guarantee covers all reservoirs, backpacks, bottles, coolers, drinkware and accessories from manufacturing defects* in materials and workmanship for the lifetime** of the product.