Men’s Merino Wool Union Suit

The Traditional ColdPruf Men’s Merino Wool Union Suit Will Keep You Warm and Comfortable

When winter’s chill sets in and you need reliable warmth for work or outdoor adventures, the ColdPruf Authentic Men’s Union Suit delivers exceptional comfort and insulation. This classic piece of long underwear combines time-tested design with modern performance features to keep you cozy in extremely cold conditions.

Drawing on the traditional rib knit union suit style that has kept workers and outdoorsmen warm since the early 20th century, ColdPruf’s innovative dual-layer construction creates a natural insulation system. The suit’s unique “sandwich” design traps warm air between two carefully engineered layers: a soft combed ring-spun cotton interior that feels wonderful against your skin, and an outer layer featuring premium Merino wool blended with cotton and nylon for superior thermal protection.

Key Union Suit Features

• Full button front for easy dressing and undressing
• Traditional rear flap for convenient relief
• Smooth rib neckband
• Ribbed cuffs at wrists and ankles to lock in warmth
• Flat seams and tagless design for all-day comfort
• Ideal for low to medium activity in very cold or extreme conditions
• Classic Red color in a versatile 6.6 oz weight
• Layered with soft cotton inside and warm Merino wool blend outside

Whether you work hard outdoors or enjoy winter activities, this union suit’s dual-layer technology delivers outstanding thermal regulation. The interior 100% cotton layer wicks moisture away from your skin, while the outer layer’s 40% Merino wool content provides natural temperature control and odor resistance. The addition of 10% nylon enhances durability, ensuring your union suit maintains its shape and performance through repeated wear and washing.

This piece represents the perfect fusion of heritage design and modern performance, offering the reliable warmth you need when facing bitter cold conditions. With ColdPruf’s time-tested construction and premium materials, you can trust this union suit to keep you comfortable in even the most challenging winter weather.