The ChillMate 450ml B double-walled VACUUM cup is a great solid top quality cup. It's unique design look and 450ml volume makes it the perfect as a beer cup or for any other liquids. The ChillMate 450B has been designed to keep your drink cold until the last drop thanks to its double-wall vacuum system, no condensation on the outside like glasses and very comfortable to hold. The Bamboo and stainless steel lid transforms this cup into a much more hygienic and personal cup for you to drink from it when you need a drink, keeping all the dust and bugs out, even keeping your drink colder longer.