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The Wind chill index

When the wind is not blowing and you are standing relatively still, the air around your body warms up and acts as a layer of insulation. If the wind starts to blow, this warm air is pushed away by new, cold air. The more the wind blows, the cooler you become. At a temperature of minus 15°C and winds of 8 metres /second, the wind chill factor on your bare skin is the same as wind-still conditions at minus 34°C!

The relationship between the wind, temperature and effective temperature on your bare skin is illustrated by the wind chill index. But when you protect your skin, for example by wearing a jacket, a balaclava or using a wind sack, you break the relationship between the air temperature and the wind. This is why windproof garments are so important for protecting the body from exposure.


To receive your parcel before Christmas, order within: 2015-12-18T15:00 Extended Christmas Return Period until 15th January 2016 for orders made between 20th November - 31st December 2015