This mid-weight thermal top features a duo-layer construction, combining a fully synthetic inside with a Merino Wool blend face. The bi-layer design creates an air pocket between the layers, offering enhanced insulation and thermal regulation. Merino Wool, renowned for its exceptional thermal regulation and odor control properties, is blended with nylon for added durability. 

• Heather: 50% Polyester, 35% Merino Wool, 15% Nylon Bi-Layer
• Jacquard: 68% Polyester, 32% Merino Wool 
• Thermoregulation technology provides comfort through a wide range of temperatures
• 50+ UPF Rating
• Odor control
• Moisture management