The Forty Below® Bottle Boot™ 16oz./500ml size is the easy to use and effective insulating bottle cover that help slow down the water from freezing quickly, especially in extreme cold environments.

We have been making Bottle Boots™ now for over 40 years! They have been used and trusted and on just about every type of outdoor trip, from winter day hikes to extreme cold and high altitude expeditions worldwide! This very insulating water bottle cover, is specifically designed to help keep water from freezing, and easy hold onto and open and close with gloves or mittens on. The low profile, non bulky design takes up less room in your pack, and less bulk when on a backpack hip-belt, sternum strap, or jacket chest pocket.

To find out more about our complete line of insulated bottle covers, as well as more information about helping to keep liquids in extreme places, please see our All About Bottle Covers Section.

The Bottle Boot™ name is a declared and used Trademark of Forty Below Ltd and is an original product and name that we invented, designed, manufacture, sell, and has been used around the world by us since 1980. Any use of the name: “Bottle Boot”, “Bottle Boots”, the design of the product, or trade dress is prohibited.