World Class Hydration whoever you go! Tundra by Heim Concept Tumbler will keep your dinnertime drink cool well past sundown or your coffee nice and hot throughout the morning. Tundra 30oz. Tumbler is made of 18/8 kitchen-grade stainless steel, has double-wall vacuum insulation, and no condensation sweat. Which means that you ve got one heavy-duty, over-engineered stainless steel tumbler on your hands with the Tundra. s dishwasher safe, BPA-free, and ready for just about anything. Features: Your personal hydration power station Holds 30 oz. of your favorite drink, keeping it cold or hot for longer Stainless steel construction will hold up on the lease, ranch, or worksite Double-wall vacuum insulation keeps cold drinks cold and hot drinks hot The 32 oz keeps your beverage icy cold or piping hot from trailhead to summit and every step in-between. Your perfect day and into the; refreshment solution.