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nordicjw wrote: The one thing they do best is stop the movement of air around the body. They do reflect some of the heat back to you and can add in keeping you dry.
cavedoc wrote:nordicjw wrote: The one thing they do best is stop the movement of air around the body. They do reflect some of the heat back to you and can add in keeping you dry.
No doubt a shiny plastic sheet is good for blocking wind and serving as a vapor barrier. But I have never been convinced that the shinyness has any advantage over a black garbage back for reflecting Infrared heat back to anyone. Anyone know of any data about this? I've heard confident statements going both ways.
Marduke wrote:I can tell you with 100% certainty that aluminized mylar is far and above more effective than plain black garbage bags. Aluminized mylar "space" blankets reflect up to 97% of infrared back to you, black plastic is nearly 0%.
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