The 20 oz. Stainless Steel Tumbler features double-wall vacuum insulation with a clear lid. The mug has a narrower bottom to fit most standard cup holders. It is 2X heat & cold resistant compared to a normal travel mug and is made from 18/8 gauge stainless steel (18% chromium/8% nickel) - also known as Type 304 Food Grade. These keep your favorite beverage HOT or COLD!

The tumblers are sturdy.
Seamless construction so there is no leak point.
Hole on lid is big enough for a straw.
The stainless steel band at the top without coating is approximately 1/2"(H).

Cleaning Instructions:Not recommended for dishwashers, hand wash only.