Classic, versatile water bladder * Turns almost any pack into a hydration pack, and can be used with cap for drinking and cooking around camp * Customizable with wide range of Platypus accessories (sold separately) to suit your outdoor adventures * Polyurethane and polyethylene film walls, polyethylene finger loop and spout, polyurethane drink tube, and silicone bite valve * Includes limited lifetime manufacturer"s warranty; made in Seattle, WA