Zetti Rainbow Color Gradients Glass Water Bottle - Green to Deep Blue HEALTHY, ECOFRIENDLY CHOICE: Zetti glass water bottles not only keep water deliciously fresh and cool, they're superior to a collapsible water bottle they won't leak or puncture. They're also reusable, making them better for you and the environment. MULTIPURPOSE DESIGN: Made of tough, durable glass, the Zetti glass water bottle is classier and more professional than a stainless steel water bottle, making it better for work, the gym, Pilates or even Yoga. It's also ideal size for automobile cupholders and backpack mesh pockets. LEAKPROOF TWIST CAP: Though we don't recommend using it as a runners water bottle, our unique water bottle does come with an easy to use twist cap that's also leak proof so you never have to worry about spills in your car or at the gym should it get knocked over.