The Yeti Rambler 30 oz Tumbler is designed to keep your drinks at their ideal temperature. With kitchen-grade stainless steel and double-wall vacuum insulation, your morning coffee stays hot and iced drinks stay cold. The MagSlider Lid, featuring magnets for smooth opening and closing, adds an additional layer of protection. This durable tumbler is built to resist dents and dings, and its No Sweat Design keeps hands dry. The 18/8 stainless steel is resistant to rust and corrosion, and the DuraCoat finish ensures the color won't fade, crack or peel. The 30 oz tumbler comes with a MagSlider Lid and both are dishwasher safe.