Made using only 3 simple ingredients (sustainably harvested bamboo, food grade silicone, and stainless steel) the Klean Kanteen Insulated Water Bottle is anything but basic. With patented Climate Lock™ technology this bottle will keep all your tasty beverages cold for up to 24 hours, iced for 40 hours, and you happy every day of the week. Klean Coat™ is formulated with the planet and you in mind making this product 4x more durable, reducing impact with a longer lifespan, and keeping nasty chemicals out of your body. Plus, it looks and feels great.