Product Description The YETI 20 oz. Rambler tumbler keeps your beverage hot or cold while on the go. The double-wall vacuum insulation keeps your beverage at the ideal temperature. It fits comfortably in your car, boat, or truck. The Rambler Cup is designed with 18/8 stainless steel and is sweat-free, providing you extreme durability and long-lasting use. Don't worry about spills and leaks with the crystal clear lid.B