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.
UPDATE 5-10-21 Temporarily out of stock until late May/early June. Sorry! Please email us via the contact us page if you would like to be notified as soon as they are ready to ship!
It keeps water from freezing, especially in extreme cold environments.
Please see below for additional information.