Whatever the weather, the 350 ml Dopper Insulated Blazing Black is the perfect sidekick to help you drink from the (hot or cold) water tap thanks to its scratch-resistant stainless steel body. This insulated bottle will keep your water, tea or coffee hot for 9 hours or cold for 24. And it keeps you saving our oceans. . The three-part design means its easy to fill and easy to clean - by hand or in the dishwasher (max 65 degrees).