Men's Mid Weight Double-Layer Thermal Union Suit

Varitherm : High Intensity | Mild to Frigid

Performance base layer for high-intensity activity in all cold weather conditions.

Chosen by the British Royal Marines and the USA Luge and Bobsled teams, Varitherm High Performance Base Layer represents the ultimate standard for combined thermal protection and moisture management. Designed for a wide variety of cold weather sports and activities, Varitherm performance features will not wash out or wear away.

Originals : Moderate Intensity | Cold to Frigid

The original Duofold technology with a soft cotton inner layer next to your skin for superior comfort, wool blend outer layer for superior warmth.

As the first two-layer warm wear, Duofold Originals have a history of success going back to 1906. The two-layer construction combines cotton next to the skin and wool in the outer layer, to deliver comfort, quality and thermal insulation. For even greater comfort, Orignals are now tagless!

Thermals : Moderate Intensity | Mild to Cold

Everyday warmth for everyday cold.

Thermals'' two-layer construction combines the next-to-skin softness of cotton with the durability and performance of polyester. Designed to create a thermal barrier against the cold, Thermals provide warmth and maximum comfort at lower levels of aerobic activity. For even greater comfort, Thermals are

now tagless!