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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:

Fabrics that contain fluorescent materials in order to make the wearer visible in dim and dark lights. These fabrics have the ability to reflect on-coming lights, which cause them to glow in the...
A mark left in a fabric after a crease has been removed, and that may be caused by mechanical damage to fibres at the fold, by variation in treatment owing to the constriction along the fold, or by...
Named after it's city of origin in France. It is identified by its raised woven pattern. This double-faced textile has a quilted appearance that is very elegant. Usually found in white, but other...
A yarn that is intentionally produced to have a special or unique effect. These effects can be produced by twisting together uneven single yarns, by using yarns that contain irregularities, or by...
A lightweight plain weave cotton fabric with a striped, plaid, or checked pattern. A true madras will bleed when washed. This type of fabric is usually imported from India. End-uses are men's and...

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