Just add your favorite cocktail to the Toadfish Non-Tipping Rocks Tumbler and keep your drink accident-free and always chilled. Includes built-in graduated measurements for the perfect pour and a shatter-proof lid with a removable slider. This is your new go-to companion from bourbon to coffee. The Toadfish Rocks Tumblers hold on when others can't. The Tumbler Gift Set includes the Rocks Ice Ball Tray that creates 6 slow melt ice spheres that are the perfect companion for any cocktail. These ice balls are designed to pair with the Toadfish 10-oz. Non-Tipping Rocks Glass. The dishwasher-safe ice tray is made of food-grade silicone that flexes to easily push and release ice.• SmartGrip Suction Technology makes it hard to tip but easy to lift• Double-wall vacuum insulation keeps cold drinks cold and hot drinks hot till the last sip• Made with high-grade stainless steel• Built-in graduated measurements so you get the perfect pour every time• Durable shatterproof lid with easy-slide tab keeps your drink safe and easy to sip2-Pack Gift Set IncludesTwo Non-Tipping 10-oz. Rocks TumblersOne Ice Ball Tray Durable shatterproof lid with easy-slide tab makes it easy to drink Built-in graduated measurements so you get the perfect pour every time Rocks Ice Ball Tray creates 6 slow melt ice spheres that are perfect for any cocktail | TOADFISH Non-Tipping 10- oz Rocks Tumbler 2-Pack Gift Set