Adventures (& drinks) are better on the rocks. We think adventures and drinks are better on the rocks. And thanks to our 10 oz Rocks glass you can enjoy whiskey at Wallace Falls, rum on Mt. Rainier, or bourbon at Black Butte Lookout. Plus, our TempShield? double wall insulation keeps your ice from melting for up to 24 hours, perfect no matter if you?re out car camping in the wilderness or enjoying a beverage closer to home. Our 10 oz Rocks glass was designed to have a delicate beveled bottom, providing the perfect shelf for your pinky finger. The 22 oz. Tumbler lid is compatible and comes with your Rocks glass to help reduce spills at the campsite or in the backyard.