For those nights in the outdoors or when the precious crystal tumbler is just too clean, the Machine Era tumbler comes into play. This manliness emanating tumbler is inspired by the classic small mouth Ball Mason jar and as such holds 6.7 oz of your favorite spirit. To provide outstanding insulation, the tumbler is milled from a solid block of aircraft-grade aluminum, which is hard anodized for a black finish with thick, food-safe coated walls and wrapped in a hand-sewn and stone-washed leather sleeve. It’s simply made to become an essential in your bar.