The Klean Kanteen TKWide 20oz – Twist Cap was designed with versatility, and portability in mind, to create the best water bottle, iced coffee mug, sport bottle and insulated cup, all in one package. Constructed from 18/8 food grade stainless steel, its double wall Climate Lock™ vacuum insulation helps keep contents cold for up to 59 hours. Includes a leak-resistant twist cap with built-in reusable steel straw. This item is BPA Free and features a chip-resistant Klean Coat™ powder coat finish that is easy to clean. Its electropolished interior does not retain or impart flavors. Not recommended for very hot liquids due to steel straw. Recommended hand wash only. 20oz.