When the weather is feeling too hot, have no fear. With this amazing tumbler, you'll be able to keep your drink cold for hours! You'll be able to stay hydrated, so that you can go all day long. This tumbler is a great way to support LouCity! Features: Double Wall 18/8 Stainless Steel, Copper Lined for maximum temperature efficiency - Food Grade, No Metallic Taste, No Sweat, Vacuum Insulated, Shatterproof, & BPA Free."