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(TM) Design so your drinks are consistent and cold from the first pour to the last.Compatible with RamblerA(R) 10 oz Lowball, RamblerA(R) 10 oz Stackable Mug, RamblerA(R) 16 oz Stackable Pint, RamblerA(R) 24 oz Mug, RamblerA(R) 25 oz Straw Mug and the RamblerA(R) 20 oz Tumbler.