Constructed from 90% post-consumer recycled 18/8 food grade stainless steel, its double-wall Climate Lock™ vacuum insulation helps keep contents hot up to 24 hours or cold for up to 83 hours. Includes a leak-resistant vacuum insulated wide loop cap which creates a full stainless steel interior designed to increase thermal performance. 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. Recommended hand wash only.