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Blizzard Gets Military Thumbs Up

Innovative survival kit is four times more effective than normal survival bags. Better warmth than down.


Posted: 18 June 2007
by Jon

The innovative Blizzard Survival System kit is making big waves with the military winning a Royal Marines arctic survival bag trial and being issued to US special forces deployed in Iraq and elsewhere.

Blizzard's range of survival bags, blankets and jackets gives incredible insulation by using a technology called Reflexcell. Basically it's an elasticated, lightweight reflective material which also traps layers of insulating air inside triangular channels making it extremely warm.

According to figures from Leeds University, a Reflexcell bag gives warmth figures of 24 Togs/kg which is well over twice the value of goose down, previously thought to have the highest warmth to weight ration among usable insulating materials. It's also barely affected by the presence of moisture, unlike down.

Marine Test

That was born out by Royal Marine tests in Arctic Norway earlier this year which showed that the Blizzard bags were up to four times more effective then current UK army issue survival bags and kept soldiers warm for up to three times longer than bivvy bags commonly used by civilian mountaineers.

The bags are also a big hit with the US military. Every medic operating with US special forces is now being issued with the military version of the Blizzard Survival Blanket after research showed that a high proportion of casualties in Iraq suffered hypothermia while being evactuated to field hospitals.

British Apache pilots are among others also using Blizzard as are search and rescue helicopters in the UK, Cyprus and the Falklands, which have replaced standard sleeping bags with Blizzard bags to save weight and bulk.

Previously rescue helicopters carried our sleeping bags and weighed around 70lbs, with a volume of 100 litres each. These have been replaced by four Blizzard Survival Bags, which weigh a total of around 2 kgs (4.5lbs) with a packed size of around 4 litres, which increases the capability of each aircraft to carry more fuel and equipment.

Ultralightweight...

That's a ringing endorsement of the effectiveness of the Blizzard system, but it's also something that makes a lot of sense for walkers and climbers as well as ultra-lightweight backpackers and adventure racers.

Blizzard bags offer around 8 Togs of warmth - equivalent to a lightweight sleeping bag - are fully watrproof and windproof and weigh 385 grammes with a packed size of 21 x 11 x 4cm.

What's interesting for lightweight freaks is that although they're supplied in vacuum-packed form, they can be re-used and repacked for planned bivvies.

Definitely worth a look. See www.blizzardsurvival.com for more information.


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This has been discussed on some threads on a couple of UL Backpacking sites Stateside. There were questions concerning durability and re-compressability after it escapes it's vacuum packing---supposedly, it is hard to repack into a small volume. The fact that the bag is waterproof raises yet other concerns such as condensation within the bag.

Still, it looks interesting...


Posted: 18/06/2007 at 23:44

Wasn't the blizzard designed as an emergency item, and not something you would use on a regular basis?

I have one, and think it is superb for the assurance of a waterproof and warm bag that will keep me alive overnight, and weighs 350 grams. In that situation repackability and breathability are non-issues.

However, it people are starting to use it as an everyday ultralight product, then I imagine that it wouldn't fare very well!

Posted: 19/06/2007 at 11:32

It's meant to handle condensation pretty well because it's 3-layer construction and the inner two have small perforations which allow any condensation to be driven away from the body.

And I've seen one repacked - no ,it won't go as small as the original vacuum-packed packet, but it still scrunches down to a reasonably small bundle, especially if you take a bit of time and trouble over it.

That said, I carry mine as an emergency item through the winter, so I've not tried it first-hand yet.

Posted: 19/06/2007 at 11:41

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