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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:

Enzymes used for treatment of yarn, fabric, and garments in wet processing operations such as pretreatment, including desizing, scouring, and bleaching; and finishing operations including surface...
Treatment or process designed to alter or improve the surface appearance, function or texture of a fabric. Examples include: mercerizing, calendaring, glazing, moiré, napping, shearing, cropping,...
A Process Of Patterning Cloth By Tie-dyeing In Which The Design Is Reserved On The Undyed Cloth By Tying Small Spots Very Tightly With Thread To Protect Them From The Dye. Especially Popular In...
The use of the term in relation to treated cotton ducks is prohibited by the "Fair Trade Practices Act" unless :the product shall be impervious to the passage of any water so long as the fabric may...
A term applied to a type of nylon yarn which has been through processing to introduce a high level of twist. This creates a yarn with some recovery but without "bulk" associated with texturised...

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