Our 340ml clear smooth Tumbler is perfect for serving any hot and cold drinks. The tumbler is made out of high quality polycarbonate, which is virtually unbreakable. These tumblers are dishwasher safe. The design, very similar to the traditional half pint glass, also allows for them to stack perfectly. A great alternative to disposable tumblers. Also a more environment friendly option as opposed to single use plastics. Extremely lightweight and durable tumbler, which is great for everyday use.