All our Amazing Designs are printed on High Quality Tumblers made from Food Grade Stainless Steel. They feature Double Wall, Vacuum Insulated construction, a Sliding Spill Proof lid, & a plastic straw. These tumblers are designed to keep your beverages Cold up to 24 hours & Warm up to 8. Thier vibrant colors & vivid detail is achieved by using a durable printing process called sublimation which, with proper care, will last for years. Unlike vinyl which tends to peel & fade over time. 20 oz. capacity Durable Sublimated Print Slide Style Spill Proof Lid Food Grade Stainless Steel Double Wall construction Vacuum Insulated Plastic Straw included Keeps beverage Cold up to 24 hours Keeps beverage Warm up to 8 hours 20 Oz Skinny Tumbler, Teacher Fuel, Pencil, Stainless Steel Tumbler