8 of 8 people found the following review helpful
-31* AND LAYERS,
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This review is from: Duofold Men's Midweight Thermal Crew (Apparel)
Standing outside for 12 hours per night while drilling to place explosives, in negitive 30 degrees takes some special clothing. Several layers that you can quickly add or remove to avoid ever breaking a sweat that might freeze later, or sooner! I like Duofold's Midweight Thermals for a near skin layer. If I can beat -31*, everything else is easy!