Wool is the truth
"Wool adsorbs water. Once inside the fiber, there is a temporary chemical bond (hydrogen bond) attaching water molecules to the surfaces of inner structures of the fiber. All adsorbtion is exothermic, meaning that it releases heat. Breaking the hydrogen bond and freeing the water molecule, desorption, requires heat. That is how wool can be cooling as well as heating! Both adsorption and desorption tend to happen very slowly.
A WeatherWool customer (THANK YOU!) forwarded to me a paper from the Australian Commonwealth Scientific and Industrial Research Organisation (
CSIRO) ...
The wool fibre and its applications, by Dr Geoff Naylor. We are very grateful for this material. Here are a couple of big items from this paper:
Once inside a wool fiber, water vapor will condense, releasing about 533 calories per gram. (I wonder if the temp of the fabric or the external temp affects the rate at which water is vaporized and released from within the fibers?)
A kilogram of dry wool placed in an atmosphere of air saturated with moisture releases about the same amount of heat as that given off by an electric blanket running for eight hours."
The "science" is all well and good and strongly supports wool as the best All-Purpose Outerwear. But before the write-up, maybe it's worth a 2-minute video of me proving the points made in the text because it's the actual performance that counts. This clip appears in a number of places on the...
weatherwool.com
"Wool fabrics are less odorous after wear than fabrics made from other natural or man-made fibres, such as cotton and polyester. Research has shown that high levels of odours persist in unwashed polyester clothes, but odour levels remain low in unwashed wool clothes. One New Zealand study which involved 13 skilled olfactory (smell) assessors found that wool fabrics on average retained 66% less body odour intensity than polyester fabrics and 28% less than cotton fabrics."
Science proves wool garments and textiles are naturally resistant to body odour without the need for chemical finishes.
www.woolmark.com