• Forty Below 0.5 L Insulated Bottle Cover Green front view with white logo white background
  • Forty Below 0.5 L Insulated Bottle Cover Green backside view with black belt loop white background
  • Forty Below 0.5 L Insulated Bottle Cover Assorted colors front view with white logo white background
  • Forty Below 0.5 L Insulated Bottle Cover Green side view of cover mounted to sternum strap of backpack
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Forty Below

Forty Below® Bottle Boot™ 16oz/500ml

Forty Below® Bottle Boot™ 16oz/500ml

$33.95 USD
$33.95 USD
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Color: Black
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The Forty Below® Bottle Boot™ is an insulating bottle cover designed to slow the freezing of water bottles in extremely cold environments.

The 16 oz/0.5 Liter size fits the Nalgene 16 oz. bottles, 0.5 Liter 40 Below Cold Weather Water Bottle, and many others of a similar size.

Trusted for over 40 years, our bottle covers have been used worldwide on just about every type of outdoor trip, from winter day hikes to extremely cold, high altitude expeditions.

  • Key Features

    • Fits most 0.5 Liter/16oz. size water bottles, such as Nalgene, 40 Below Cold Weather Bottle
    • Significantly slows down liquids from freezing in cold conditions
    • Also keeps liquids cool in warm conditions!
    • Velcro front closure with Grab-Tab - Easy to use with mittens or gloves
    • No zippers to break or freeze
    • Low Profile Design, packs small
    • Does not absorb water
    • Webbing belt loop

  • Product Specs

    • Insulation: 1/4″ (6.5mm) thick stretchy nylon covered closed cell foam (wetsuit type material). Uniform thickness.
    • Size: Fits most 0.5 Liter/16 oz. size water bottles, such as 40 Below 0.5 L Bottle, etc.
    • Fits: Bottles up to 3 inches in diameter and 7 inches tall. Stretchy material allows for some flexibility with different shapes of bottles.
    • Colors: Red, Royal Blue, Black, Green, Purple, Desert Tan, Yellow, Pink
    • Weight: 3 oz (84g)
    • Handmade in China

Featured Review
The ROBONZA All About Mountain Gear Blog reviews the Forty Below® Bottle Boot™ 0.5 liter/16oz (SEE HERE)

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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