Any tumbler that's coming along for the ride needs to be tough enough to keep up. Our Rambler20 oz. is made from durable stainless steel with double-wall vacuum insulation to protect your hot or cold beverage at all costs. While the magnet on the included MagSlider™ Lid adds an additional barrier of protection for keeping drinks contained and preventing heat or cold from escaping, please note - this magnet component is not leakproof and will not prevent spills. Available in stainless and DuraCoat™ colours. YETI Rambler 20oz Tumbler Features: 18/8 STAINLESS STEEL Made with kitchen-grade stainless steel, so they’re puncture- and rust-resistant. DISHWASHER SAFE Because no one needs more work to do. DOUBLE-WALL VACUUM INSULATION Keeps cold drinks cold and hot drinks hot until the last sip. NO SWEAT™ DESIGN Prevents condensation, keeping hands dry. DURACOAT™ COLOUR Built for the wild, this colour won’t peel or crack.