Personalize them in bulk to save moreThe Klean Kanteen Eco Insulated Tumbler 16oz will soon become your favorite to-go tumbler cup. 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 4 hours or cold for up to 20 hours. This item is BPA-free and features a chip-resistant Klean Coat™ powder coat finish that is easy to clean. Its slim design fits most standard cup holders. Its electropolished interior does not retain or impart flavors. Recommended hand wash only. 16oz.