Thily Stemless Vacuum Thermal Insulated Wine Tumblers Are Crafted From 304 Food-grade 18 & 8 Stainless Steel Metal, Durable & Shatterproof. Highly Resistant to Rust & to Absorbing Odor, Taste. All Components Are Non-toxic, Bpa Free & Eco Friendly, Wont Alter Flavors. Safer & Healthier Than Plastic or Wine Glasses, These Unbreakable Wine Tumblers Are Triple-insulated Keep Hot Up to 3 Hours & Cold Up to 9 Hours. the Exterior of the Vacuum Sealed Area is Dipped in Copper for Added Insulation & Sweat Proof. the Thermal Copper Lining Keeps Your Wine or Coffee at the Perfect Temperature, Comes with a Removable Clear Transparent Push-on Lid Keep Any Dust Particle Getting In, Splash-proof & Straw Friendly. You Will Also Get a Reusable Stainless Steel Metal Straw, Our Stemless Thermal Insulated Wine Tumbler