The all new glass Ember Cold Tumbler was designed with iced coffee lovers in mind. For a long lasting iced experience, it combines premium materials with on the go conveniences. The Cold Tumbler is crafted with temperature-resistant, double-wall insulated glass, keeping drinks cool and minimizing condensation. Its high-quality borosilicate glass makes it durable and easy to clean, all while preserving the pure taste of your drinks. With its innovative 2-way lid design and subtle aesthetics, the Cold Tumbler makes sipping cold coffee, tea, and even water what it should be  effortlessly chill.