Union Suit - Wool Plus by Duofold

This heavyweight union suit was originally created by Duofold in two layers for the U.S. Army's Cold Weather Clothing System for superior warmth. Outdoor workers have been wearing them for years during extremely cold weather for all day comfort. Outdoorsmen and winter sports enthusiasts also count on Wool Plus's moisture control during increased physical activity. Features include:

• Warm outer layer of 40% Merino Wool,
  50% Cotton, and 10% Nylon
• Soft inner layer of 100% Cotton for comfort
• Trapped air between layers creates a thermal barrier
• Oatmeal color