Forty Below Bottle Boot
48 oz. size
(Fits the tall Nalgene 1.5 qt)
The Forty Below® Bottle Boot™ 48 oz size is an insulating water bottle cover that fits the Nalgene 48 oz tall bottle. NEW UPDATE: 4-19-21: Temporarily Out of Stock until about 5-05-21 (sorry!) Please check back again!
It keeps water from freezing, especially in extreme cold environments.
Please see below for additional information.