The Insulayer Originals Men's 2-Layer Long Underwear Unionsuit, from performance apparel manufacturer Duofold, is a one-piece style designed for a wide variety of outdoor activities, including trekking, camping and skiing. The comfortable Merino wool blend outer layer and an extremely soft 100% cotton inner layer form a 2 layer thermal barrier that traps air and keeps you warm in very cold weather. A mid-weight unionsuit, this Duofold style has flat seams to prevent chafing, a fit that remains close to the body, a button front and a one-button vertical seat flap. Treat your whole body to the softness of Duofold's long underwear.

Product Features:
* Warm, Merino Wool blend outer layer
* Exceptionally soft, 100% cotton inner layer
* This Duofold union suit is 1 piece
* Thermal power of wool & a comfortable cotton lining
* 2-layer thermal fabric traps air, forming a thermal barrier
* This Duofold thermal underwear is Mid-weight
* Body size construction eliminates bunching and wrinkling
* Flat seams throughout this Unionsuit to prevent chafing
* One button vertical seat flap
* Enjoy the outdoors in warmth and comfort
*Add $4.00 for 2XL