Promotional Dopper Glass Insulated (450ml) An ocean-saving device with a luxurious appeal. The Dopper Glass Insulated 450 ml is ready to make a statement against plastic pollution – not just on your desk, but also to the world. With a body made from durable, stain- and scratch resistant borosilicate glass and a built-in cup to drink from, you can raise your Glass to crystal clear waters and plastic-free oceans. In style. The double-wall space shields the outside of the glass bottle from the hot or cold water inside, keeping your drink at your preferred temperature for longer. A unique three-part design means this glass thermos is easy to fill and easy to clean – by hand or in the dishwasher (at max 65 degrees). The three-part design means it’s easy to fill and easy to clean - by hand or in the dishwasher (max 65 degrees).