Our Tumblers are stainless steel, double wall insulated and come in 20oz, 30oz, and 40oz sizes. Keeps your drinks ice cold longer - works great for hot beverages. The included all-new shaded Splash Proof lid lets you know exactly how much drink you have. The flip-top closure resists spills and is straw friendly. Easy to clean. Features & Technology Dishwasher Safe Keep lids in the top rack to prevent damage Double Wall Vacuum Insulation Maximum temperature retention & insulates hands from the cold No Sweat Exterior The outside stays dry. No need for a coaster 18/8 Stainless Steel Strong stainless steel construction Keeps Ice Longer Holds ice for up to 24 hours Keeps it Hot Works great for hot beverages Air Tight Seal Heavy duty lid seal locks in the cold Easy Grip Base Taller base ensures a better grip Included Splash Proof Lid Flip-top lid prevents splashes Narrow & Tall Design Fits more cup holders