Say hello to the coolest cup ever. This Tumbler's triple insulated, vacuum sealed design keeps drinks cold for 9 hours or hot for 3 hours. It offers three walls of proprietary insulation, is crafted from 18/8 stainless steel, and holds 16 or 24 ounces of your favorite beverage. Plus, it won't impart flavors or leach chemicals. Leave your travel mug at home - Tumbler is also made to take on the go, fits in most car cup holders and comes with a shatterproof, BPA-free lid with a sliding piece to prevent spilling. Use it for everything from your morning coffee to an evening cocktail at home.