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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 type of velvet fabric woven on a wire loom or ÚpinglÚ loom. The ÚpinglÚ velvet is specific by the fact that both loop pile and cut pile can be integrated into the same fabric. The art of ÚpinglÚ...
The generic name for fibres composed of synthetic linear macromolecules that have in the chain recurring amide groups, at least 85% of which are joined directly to two aromatic rings and in which...
A broom is a cleaning tool consisting of stiff fibres attached to, and roughly parallel to, a cylindrical handle, the broomstick. In the context of witchcraft, "broomstick" is likely to refer to the...
One of the plain weave variations, which is formed by using: 1) heavy yarns in the warp or filling direction, or 2) a substantially higher number of yarns per inch in one direction than in the other,...
A float weave made in many fabrics. The name comes from a French word meaning birds nest. Its patterns are regular and open. Honey comb fabric is also known as Diamond Weave. It is found in...

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