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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:

Frieze is a coarse woollen cloth with a nap on one side, that was raised by scrubbing it to raise curls of fibre (French: frisť). In the 19th century rough cheap frieze was made of wool mixed with...
A jacquard fabric usually made with a taffeta or faille ground. The design is created by colored warp threads brought up on the face of the fabric, leaving loose yarns on the back. These threads are...
Wet describing chemicals applied to a fabric and generally seen as less environmental-friendly than mechanical dry finishes. However, there are some eco-friendly wet finishes, which are increasing in...
A shuttle in weaving is a device used with a loom that is thrown or passed back and forth between the threads of the warp in order to weave in the weft or woof. Shuttles are often made of flowering...
One of the most important developments in spinning man- made fibers is the technology of microdeniers where continuous filament fibers emerge from a spinnerette less than one denier per filament in...

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