Enjoy hands-free hydration no matter what activity you're doing ogio's 70 oz hydration reservoir is the ideal item if a hydration pack needs a replacement reservoir, or as the source in a pack featuring hydration capabilities. Volume markings are on the front, so you can mix your favorite drink or electrolytes inside. Stay focused on your physical fun, and don't be burdened with carrying a clumsy water bottle. Choose ogio's 70 oz hydration reservoir to serve your hydration needs. Slide lock opening with large opening accommodates ice cubes and easy cleaning after use BPA-free polyurethane Film is protected by Microban antimicrobial technology Ogio hydration reservoir utilizes radio frequency welded seam technology on seams and exit port to ensure a strong leak-proof bond angled easy flow bite valve provides a constant flow-rate TPU tubing is odor free and taste free volume markings on the front for making it easy to mix electrolytes or your favorite drink 70 oz. (2.0 L) capacity