Double-walled vacuum insulation with a clear lid. They have a narrower bottom to fit most standard cup holders. They are 2X heat and cold resistant compared to a normal tumbler. These are made from 18/8 gauge stainless steel, also known as Type 304 Food Grade. Seamless construction so there is no leak point. The hole on the lid is big enough for a straw. Handle is not removable. Not recommended for dishwashers, hand wash only.
