Bottle Boot™Forty Below Ltd.
The unique design enables the user to easily open and hold onto with mittens or gloves, with easy access to the bottle, and no zippers to break or freeze and the low profile, non bulky design takes up less room in your pack and less bulk when on a backpack hip-belt.
This 1 Liter size fits Nalgene 32oz. bottles.
Weight: 4.5 oz / 126g