Duofold Men's Thermal Underwear

This Duofold original heavy weight, two-layer fabric features a blend of Merino wool and polyester for comfortable warmth in extremely cold weather during...

This Duofold original heavy weight, two-layer fabric features a blend of Merino wool and polyester for comfortable warmth in extremely cold weather during...

This original mid-weight, two-layer thermal fabric features a blend of Merino wool and polyester for comfortable warmth in very cold weather during low...

This original mid-weight, two-layer thermal fabric features a blend of Merino wool and polyester for comfortable warmth in very cold weather during low...

Mid-weight, jersey knit fabric provides ultimate moisture management and warmth for high activity in cold weather. Odor resistant fabric 360...

Mid-weight, jersey knit fabric provides ultimate moisture management and warmth for high activity in cold weather. Odor resistant fabric 360...

Mid weight two-layer Thermals combine the softness of cotton with the performance of polyester - perfect for lower levels of aerobic activity. Designed to...

Designed for to include a wide variety of low-activity occasions. The two-layer thermal combines the softness of cotton with the performance of polyester...