The Klean Kanteen Insulated Stainless Steel Travel Mug is the best stainless steel solution for hot coffee, cold brew, tea, water and more. Constructed with high quality stainless steel and rigorously tested double-wall vacuum insulation, the 355ml Insulated Stainless Steel Travel Mug will keep drinks hot for 10 hours and iced for 30 hours. Comes with a leak proof Café Cap 2.0 which keeps drinks safely contained, spill free and has easy clean construction. The wide mouth opening fits ice is easy to fill and pour. Electropolished interior, a process that is safe and non-toxic, and rounded corners make the bottle easy to clean.