Klean Kanteen's 473ML/16oz Insulated Tumbler will keep your drink cool for up to 20 hours. Wouldn't it be nice to take sips of a cool drink all day in the sun or if it's chilly and you have just jumped out of the sea you could have a hot drink waiting onshore and it will keep for up to 4 hours. It comes with the Straw Lid, which includes a steel straw with matching colour silicone. This will soon become your favourite to-go tumbler cup. Chip-resistant Klean Coat powder coat finish is more durable and Climate Lock insulation keeps contents hot or cold. The Straw Lid is splash-resistant and compatible with any of our reusable straws. No more plastic – just your favourite drinks on the go in a stainless steel tumbler. Features: Climate Lock™ keeps contents hot for up to 4 hours or iced up to 20 hours Chip-resistant Klean Coat™ powder coat finish (Brushed Stainless has no coating) 18/8 food-grade stainless steel BPA Free Won't retain or impart flavors Slim design fits in most cup holders Includes splash-proof Straw Lid with stainless steel & silicone straw hand washing is recommended for all insulated products.