Make any hour happy hour by turning your YETI Rambler® Drinkware into a cocktail shaker with a leak-resistant shaker lid that’s as durable as it is portable. It's made with stainless steel, features double-wall insulation, and No Sweat™ Design so your drinks are consistent and cold from the first pour to the last. Compatible with Rambler® 10 oz. Lowball, Rambler® 10 oz. Stackable Mug, Rambler® 16 oz. Stackable Pint, Rambler® 24 oz. Mug, Rambler® 25 oz. Straw Mug and the Rambler® 20 oz. Tumbler. Features: 18/8 stainless-steel design is puncture resistant and rust resistant with double-wall insulation to keep whiskey sours ice-cold Leak-resistant to help prevent spills and splashes Built-in strainer keeps ice back for an easy flow Twist cap makes serving easy BPA-free Dishwasher safe for easy and thorough cleaning