Powder coated stainless steel 24 oz double wall tumbler with handle and a cork bottom. The cup's built-in cork bottom serves as a coaster & prevents the cup from sliding around on smooth surfaces. Keep drinks hot for up to 8 hours & cold for up to 12 hours. With its standard fitting design, you can take your insulated java mug with you wherever you go. The travel mug diameter is under 3 inches, so it will fit in virtually any car's cup holder. They are constructed of food-grade materials.