Tested on the Colorado River under the most extreme conditions. Result - 100% success! Take the New JYARZ Classic with you on your next adventure and it'll stand up to all the extremes you throw at it. The New JYARZ Classic features: * NEW more rugged design * NEW Child Proof Cap or Screw on Cap options * NEW 3x odor blocking system, unique to JYARZ (O-ring seals in the freshness where the cap meets the bottle) * Glass-lined - with thick glass is most beautiful material in the world * Eco-consciousness that will make you feel good inside JYARZ unique TripleBlock™ design offers three layers of freshness, enhancing  dankness odor control:  * A new silicone o-ring (Child Proof Cap version) creates a seal is formed where the exterior cap and shell meet.