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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 tightly woven fabric made by using only long staple, combed wool or wool-blend yarns. The fabric has a hard, smooth surface. Gabardine is an example of a worsted fabric. A common end use is men's...
Leather is a material created through the tanning of hides and skins of animals, primarily cattlehide. The tanning process converts the putrescible skin into a durable, long-lasting and versatile...
A warp-faced piece-dyed twill fabric that has a stout texture and a higher number of threads per centimetre in the warp than in the weft. NOTE: Some drills are made with five-end satin weave and it...
Backstrap looms, as the name implies, are tied around the weaver's waist on one end and around a stationary object such as a tree, post, or door on the other. Tension can be adjusted simply by...
Some resin treatments or finishes given cotton, rayon, nylon or blended fabrics, may cause goods to retain varying amounts of chlorine when laundered or bleached with chlorine. his can cause...

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