Take the bar where you are with the ultimate drinkware and lid. Make any hour happy hour with a leak-resistant cocktail shaker 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.