1.Insulated Stainless Steel: 20oz tumbler is with Double-Wall vacuum technology to keep drinks hot for over 6 hours and cold for around 24 hours.2.Premium: The tumbler is made from high quality 304 stainless steel. Lead free and durable. Rust-proof, easy wash and unbreakable.3.Superior Powder Coated Finish: Sweat proof, easy grip, the advanced technology prevents heat transfer to outer wall, condensation free and long lasting. Electro polished inside delivers elegant look.colour: grayMaterial: 304 stainless steelSize: 7.3x17x8.8cmPackage Contents:1 x CupOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.