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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 layer of foam usually polyurethane, PVC or latex is bonded to the fabric with adhesive or fused to the fabric with heat. Generally results in a 'breathable' fabric. Used for footwear, outerwear and...
A uniform is a set of standard clothing worn by members of an organization whilst participating in that organization's activity. People performing religious activities have often worn standard...
The UPF rating indicates how effective a fabric is at blocking out solar ultraviolet radiation from reaching the skin. UPF ratings range from 15 to 50 with higher ratings indicating more effective...
A system of weaving which, because of a pattern-making mechanism of great versatility, permits the production of very ornate, complex woven designs. This type of weaving is used for tapestry, figured...
The thin compressed edge of a woven fabric which runs parallel to the warp yarns and prevents raveling. It is usually woven, utilizing tougher yarns and a tighter construction than the rest of the...

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