MiiR’s 20oz Tumbler perfectly paired with the new Cocktail Shaker Lid makes for exceptional craft cocktails. Sipping from the Tumbler is easy with an included Press-fit Slide Lid. The 20oz Tumbler keeps your drink the perfect temperature with the vacuum insulation technology. And the accompanying 2-piece Cocktail Shaker Lid system has a built-in jigger in the cap with measure markers for 1 & 2oz pours.