A LID THAT TAKES THE BAR WHERE YOU ARE. Make any hour happy hour by turning your 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® 295 ml Lowball, Rambler® 295 ml Stackable Mug, Rambler® 473 ml Stackable Pint, Rambler® 710 ml Mug, Rambler® 739 ml Straw Mug and the Rambler® 591 ml Tumbler.