FurTech Trousers

  • Venting with arms out
    A few snaps of the FurTech Trousers

FurTech Jackets

  • NewYear2010 080
    A collection of photos showing FurTech jackets.

Brecon Beacons and S Wales

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    Thes photos were taken amongst the hills and mountains of S Wales.

Lake District

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    Low clouds in The Lakes - nothing new there, then? ;-)


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    Darren Davis has used the FurTech Claw Jacket and FurTech trousers on two expeditions to Greenland. Go to Testimonials to view his report.

Summer Alps

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    On the Swiss Italian border, above Zermatt.

Scottish Winter / Spring

  • Scotland April2012 AD 280
    In February 2006 a few of the Glossop Mountain Rescue Team went for a long weekend to Glen Coe. We took the opportunity to test a variety of prototype jackets. Other photographs from 2008, 2009 and 2012.

Via Ferrata

  • RoxDolomitesAug09 076
    Summer in the Dolomites can be warm and pleasant but we also had some exceptionally heavy rain and the higher mountains can retain patches of snow through the summer.

Three Cliffs, Gower

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    The beautiful Three Cliffs area on the Gower provides Sun, Sea and Severes!

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Christopher Sleight

Interesting figures, thanks for posting them. I've always found that I need less insulation to stay warm when wearing a soft shell rather than a hard shell. These figures would suggest that's probably because the air trapped underneath my very breathable soft shell is much less humid.

John Smith

The wording "X% of the dry air in your clothing is replaced by water" is somewhat ambiguous.

Does the % refer to the relative humidity of the air? (100% being 100% relative humidity, i.e. air at its dew point). Or is it replacing 10% of the air volume with liquid water, so 100% means a soaking wet sleeping bag? Those situations are VERY different, which one do you refer to?

Another way of stating this: Does the 100% situation refer to a foggy night or does 100% mean a sleeping bag soaked in water?


Just to clarify, what the table refers to is the percentage volume of air replaced by water. In effect the saturated sleeping bag scenario, not humid air.
Of course, the real life impacts of saturated insulation are much greater than even these figures suggest, as evaporation has an enormous effect. The figures also completely ignore the conductance of the insulating materials and fabrics or if they absorb water, as wool does. It also ignores the issue of how water may fill the volume without draining away or clumping up the fibres. For example it's quite difficult to fill the voids in a Blizzard Bag. On the other hand a down bag will lose much of its loft when it gets wet, so the volume actually reduces.

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