The stainless steel bottle that launched Klean Kanteen over a decade ago is now available as a high performance insulated water bottle! They combined is original, iconic Classic water bottle shape with double-wall vacuum insulation to create our most versatile bottle ever. They test the insulated bottle performance constantly and our 20oz will keep drinks hot for 20 hours and iced for 50 hours. Electropolished interior, a process that is safe and non-toxic, and rounded corners make the bottle easy to clean. The included Loop Cap helps keep the contents hot or cold, is easy to clean and leak proof. Need something bigger? Buy our Insulated 32oz here.