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Values (US units) range from 1.6 for 80-gram fabric to 2.9 for 200-gram fabric. [13] Thinsulate is considered "the warmest thin apparel insulation" available. In fact, when equal thicknesses are compared, it provides about 1½ times the warmth of down and about twice the warmth of other high-loft insulation materials. [14]
Accurate estimates of clothing insulation for an active person are therefore not available, unless measurements are made for the specific condition (e.g., with a walking manikin). A rough estimate of the clothing insulation for an active person is: I cl, active = I cl ×(0.6+0.4/M) 1.2 met < M < 2.0 met
In 1983 the U.S. Army Research Laboratory in Natick, MA approached PrimaLoft's former parent company Albany International Corp., a global advanced textile and material processing company, [8] to develop a water resistant synthetic alternative to goose down for use in military sleeping bags and clothing systems in variable environmental conditions.
This is a significant positive because, despite its lack of weight and overall immenseness, it still brings incredible warmth, with a temperature rating of -5 to 24 degrees Fahrenheit.
A typical, modern, hooded down jacket featuring seamless quilted pockets filled with down. The down jacket, known more commonly in the fashion industry as a puffer jacket or simply puffer, is a quilted coat which is insulated with either duck or goose feathers. Air pockets created by the bulk of the feathers allow for the retention of warm air. [1]
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