Whittaker Mountaineering
Free Standard Shipping on Orders Over $75

Assorted Colors

Forty Below Forty Below Bottle Boot

Insulated Bottle Cover that is easy to use with mittens or gloves on, low profile so it does not take up too much room, and won't absorb water as it is made of closed cell foam insulation.  Used on expeditions around the world for many years.

  • Helps keep liquids from freezing in cold conditions.
  • Helps keep liquids cool in warm conditions.
  • Low Profile Design.
  • Closed Cell Neoprene foam insulation.
  • No zippers to break or freeze.
  • Webbing belt loop.
  • Velcro front closure

Note: Assorted colors available. Colors will vary.

read less

Insulated Bottle Cover that is easy to use with mittens or gloves on, low profile so it does not take up too much room, and won't absorb water as it is made of closed cell foam insulation.  Used on expeditions…

read more
$23.95-32.95
Specs
  • Insulation:  1/4" thick stretchy nylon covered closed cell foam (wetsuit type material).  Same thickness completely around the bottle.
  • Size - .5L: Fits most .5 Liter/Pint or 16oz Nalgene Bottles.  Fits a bottle up to 3" in diameter and 7" tall. (Weight 3oz (84g))
  • Size - 1L: Fits most 1 Liter/Quart such as 32oz Nalgene, Hunersdorf 1000ml, or 32oz Gatorade bottles.  Fits bottles up to 3.75" in diameter and 8.5" tall. (Weight: 4.5 oz (126g))
  • Size - 48oz: Fits the tall Nalgene brand 48oz water bottle, Nalgene 32oz and 48oz Flexible Canteen, 32 oz thermos.  Fits a bottle up to 3.5" in diameter and 12.5" tall. (Weight 6.5oz (182g))
  • Colors: Black, Blue, Red, Yellow, Pink, Purple, Green

Write a review

Reviews 54321 5/5 stars based on 3 reviews.

   

Great water insulator; needs better attachment system

Tested it out in my freezer - 2 Nalgene bottles with boiled water, one with this boot, one without. After 12 hours, the one without was completely frozen, and the one with the boot was only 5% frozen. I've taken it out on a few 15F nights camping and it works well. The bottle is easy to access and fits well. My only issue is with the way it attaches - you need an accessory cord or something to pass through the attachment loop. I'd have preferred if it had a strap or something

Was this review helpful?
54321   

Great bottle parka!

I took two of these Forty Below water bottle parks to Alaska, and my fluids never froze. Very easy to open and close, and the Velcro says securely shut when moving around. Highly recommended.

Was this review helpful?
54321   

As advertised

Keeps water in my Nalgene bottle from freezing. Easy to use and durable

Use Situation: Expedition climb

Was this review helpful?