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Western Mountaineering Hot Sac VBL - Moosejaw
 
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Western Mountaineering Hot Sac VBL
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Western Mountaineering Hot Sac VBL

Western Mountaineering Hot Sac VBL is rated 4.3 out of 5 by 6.
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The Western Mountaineering Hot Sac VBL is a sleeping bag liner to increase the warmth of your winter bag on the frostier winter trips. At just 4.5 ounces of weight, cold weather expeditions can hardly go without one of these puppies. It fits on the inside of your sleeping bag, up to 6'6" of length. The ripstop nylon face fabric plays nice against the inside of your bag, while the reflective metal coating on the inside stops heat loss from evaporative cooling. Whoa, science, I almost can't handle it.

Product Description
Item No.   10016934

The Western Mountaineering Hot Sac VBL is a sleeping bag liner to increase the warmth of your winter bag on the frostier winter trips. At just 4.5 ounces of weight, cold weather expeditions can hardly go without one of these puppies. It fits on the inside of your sleeping bag, up to 6'6" of length. The ripstop nylon face fabric plays nice against the inside of your bag, while the reflective metal coating on the inside stops heat loss from evaporative cooling. Whoa, science, I almost can't handle it.

FEATURES of the Western Mountaineering Hot Sac VBL

  • VBL works by stopping heat loss from evaporative cooling
  • Elastic draw cord at the top
  • Lightweight
  • Liner only, bag sold separately

Product Specifications
Weight: 4.5 oz
Material Details: 0.6 oz Ripstop Nylon
Disclaimer: We only ship this brand to US Addresses.
Gender: Mens
Best Use: Winter Camping, Rescue and Emergency
Max User Height (Regular): 6 ft 6 in.
Product Reviews
Rated 5 out of 5 by from Great and long lasting VBL Bought for use in Arctic with down sleeping bag. Does the trick to keep moisture from accumulating in the down on multi-day trips. Like everything western mountaineering, built to withstand
Date published: 2021-11-07
Rated 5 out of 5 by from Another great WM product I bought this to add some emergency warmth to my WM Versalite sleeping bag. The VBL is lightweight and constructed very well. I don’t plan on using this a lot but it’s great insurance to pack along if temperatures dip below what is expected.
Date published: 2019-11-29
Rated 5 out of 5 by from AMAZING!!! This thing must add another 20 degrees to any sleeping bag! I would highly recommend anyone that needs a big more warmth out of their sleeping bag to add this to the mix.
Date published: 2019-11-29
Rated 2 out of 5 by from Too narrow Used it for the first time last night and found it kind of confining and difficult to turn over in. Not sure about durability yet. But it did seem to keep me warming.
Date published: 2016-01-31
Rated 5 out of 5 by from Roasty Toasty - Love it! Great product from a great company. Comfortable, quiet and highly reflective fabric keeps your bag dry and your "sac" warm. Highly recommend as a vapor barrier liner or an emergency bivy. ,,,,BUY IT!
Date published: 2013-12-22
Rated 4 out of 5 by from See what it's like, whatever you do. Great item if you want to burn up in sub-zero weather. Overkill for me with my Western Mountaineering Bristlecone -10 degree bag, but maybe I will change my mind during an exceptionally cold night, when my wife throws me out.
Date published: 2005-11-15
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Is this breathable

Asked by: Bobster
Hey Bobster, Thanks for the question. Breath-ability wasn't the characteristic that Western Mountaineering had in mind when creating its' HotSac VBL. A VBL works by stopping heat loss from evaporative cooling. The proprietary fabric doesn't allow water or air to pass through, making it ideal in extremely cold conditions where breath-ability would not be a priority.
Answered by: James
Date published: 2022-01-24

Will this work with a merino wool base layer? I have heard that VBLs have to be used sleeping au natural or whatever you are wearing will become soaked with sweat.

Asked by: Traveller
Hey hey Traveller, good question! Based on what I know about these bag liners and my experience with Merino wool, you will be very warm and definitely sweat wearing Merino layers in this liner. They are very warm and I would recommend wearing as few layers as possible when using them. I hope this helps!
Answered by: Marty Moose
Date published: 2021-03-23

Can you provide girth measurements (foot, hip shoulders) as you do for your sleeping bag?

Asked by: Daniel
Hiya Daniel, thanks for your question! The measurements are as follows: Shoulder Width (flat) - 30" Hip Width (flat) - 27" Foot Width (flat) - 19" Hope this helps!
Answered by: Alice in Wanderland
Date published: 2021-03-23

What is a difference between the vbl and sol breathable emergency blanket?

Asked by: Robert
Hey Robert, good question! The biggest difference between the Hot Sac and the SOL blankets is the fact that the Hot Sac is actually sleeping bag shaped, where the SOL blanket is literally just a blanket. The Hot Sac is also made from much more resilient material, designed to be used more than just once. I hope this helps!
Answered by: Marty Moose
Date published: 2021-03-23

Western Mountaineering Hot Sac VBL , can I buy it with a left handed or right sided zipper?

Asked by: Anonymous
Hiya, thanks for your question! The is no zipper on the Hot Sac VBL. It is just a liner with a drawstring at the top. Hope this helps!
Answered by: Alice in Wanderland
Date published: 2022-01-24
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