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What is "Warmth to Weight Ratio" - Definition & Explanation

A measurement used to evaluate the effectiveness of an insulated product in relation to weather conditions and the environment. The insulation with the best rating is down. Down provides the best warmth to weight ratio over almost any other insulation material, which is why you will see down garments and sleeping bags as the primary choice for use in almost every high altitude, cold weather expedition.

Some other terms

Some more terms:

A method of compressing, shrinking and felting a fabric through the use of moisture heat and mechanical pressure. Usually done on wool and wool blends such as melton. The process often obscure the...
Soft, white, closely woven cotton fabric calendered to achieve a high glaze. Used mainly for pocket linings, underwear, aprons, shirts, and handkerchiefs. Originally made in Cambrai, France of...
Skirt, usually with a great deal of flare. The simple ghaghras have only one vertical seam, which turns the cloth or ghaghra-pata into a tube, fastened with a drawstring passing through a long,...
A vegetable leaf fiber derived from the Musa textilis plant. It is mainly grown in the Philippines but is also found, in smaller amounts, in Africa, Malaysia, Indonesia and Costa Rica. The fiber is...
A hydrophilic compound applied to a fiber or fabric which results in superior breathability and a moisture management system within the fabric that helps to maintain a comfortable body temperature...

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