The long-sleeve Harkila Base Warm undershirt is the warmest in our collection. It is made from a very soft, warm, breathable, and naturally temperature-regulating wool blend, making it an ideal midlayer in cold weather. The undershirt has a high collar that you can close snugly around the neck, or zip open to the chest when you need to cool down.

Composition:

Main Fabric: 60% Wool/20%Polyester/20%Acrylic, High Terry

Features:

• High neck with zip closure
• Soft warm terry construction
• Thumbholes
• Flatlock comfort seams