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 18/8 STAINLESS STEEL Puncture and rust resistant with double-wall insulation to keep whiskey sours ice-cold. LEAK RESISTANT So you can keep your drink where it belongs. BUILT-IN STRAINER To keep ice back and the good times flowing. DISHWASHER SAFE because no one needs more work to do.