$39.95

The Forty Below® Bottle Boot™ 48 oz. size is an insulating water bottle cover that primarily fits the Nalgene Brand 48 oz. tall water bottle style, and some other styles of metal bottles.

Bottle Boots™ are insulating water bottle covers that help slow down the water from freezing quickly, especially in extreme cold environments.

Please see below for additional information.

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The Forty Below® Bottle Boot™ 48 oz. size is an insulating cover that fits primarily fits the Nalgene 48 oz. tall water bottle, and also some metal double walled and vacuum style (thermos) metal bottles.  Bottle Boots™ are insulating water bottle covers that help slow down the water from freezing quickly, especially in extreme cold environments.

NOV. 12, 2022 PLEASE NOTE: WE ARE TEMPORARILY OUT OF STOCK OF THIS ITEM.   Sorry! We are making more now, and hope to have some ready by the middle of December.  Please use the Reserve Now button, email, or call us if you would like to be notified as soon as they are available!

Forty Below® Bottle Boots™ have been used on trips and expeditions worldwide for over 40 years! This insulated bottle cover is a unique design that enables the user to easily use them with mittens or gloves, allowing easy access to the bottle, with no zippers to break or freeze. The closed cell insulation does not absorb water, is 6.5mm thick completely around, on top, and bottom of the bottle for maximum coverage and insulation.

Key Features

  • Fully Insulated Bottle Cover
  • Easy to use with mittens or gloves on
  • Fits: the tall (48oz) Nalgene bottles, 32oz stainless vacuum bottles such as REI or GSI models, 40oz Hydro Flask, 40oz Kleen Kanteen, 32oz Nalgene flexible Cantene
  • Helps keep liquids from freezing in cold conditions
  • Helps keep liquids cool in warm conditions
  • Low Profile, non bulky design
  • Closed Cell Neoprene foam insulation
  • No zippers to break or freeze
  • Webbing belt loop with openings for use with other straps
  • Velcro front closure with Grab-Tab

Forty Below® Bottle Boot™ Sizes

Get some Forty Below® Bottle Boots™ and see how this outstanding product can help you stay better hydrated and more comfortable in the outdoors!

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.

See it in Action

Product Specs

  • Insulation: 1/4″ thick stretchy nylon covered closed cell foam (wetsuit type material). Same thickness completely around the bottle.
  • Size: Fits Nalgene 48oz water bottle, Nalgene 32oz and 48oz Flexible Canteen, 32oz thermos, 40oz Hydro Flask, 40oz Kleen Kanteen, etc.
  • Dimensions: fits a bottle measuring up to 3.5 inches in diameter and 12.5 inches tall. Stretchy material so it can flex with different shapes of bottles.
  • Colors: Black, Red, Yellow, Dark Teal Green (bluish/green), Royal Blue, Purple.
  • Weight: 6.5oz (182g)
  • HANDMADE IN CANADA

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.

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