Product: 400A
User: Tim,
I have used the 400 series (cotton/wool) of Duofold products since 1977. An avid hunting friend of mine first showed me this product while hunting dove, ducks, pheasant and quail in the Oklahoma panhandle (often a cold, wet and windy environment in the fall & winter). A few years later I moved to Colorado where these products worked extremely well for snow-skiing, hunting, fishing and attending foot ball games. The DU Buffalos in Boulder, the Airforce Academy in Co. Springs and the Denver Broncos play in outdoor stadiums. Many times the weather has gone from sunny to snowy, with the temperature dropping 30-50 degrees. The lighter weight Duofold for spring/fall and the heavier weight for winter allows for effective layering regardless of any situation one might encounter. Nothing, repeat NOTHING, keeps one as warm as wool. PARTICULARLY if you get damp through weather or activity. Many times, I have been wet with sweat, and the Duofold still kept me warm. I can't say this about any synthetics, or goose down, which I have used and tried over the years.
Thanks Duofold for continuing to make these outstanding products. If you ever decide to stop making the cotton/wool duofold, please give the public adequate advance warning so we may stock up.