This mid-weight, duo layer crew, consists of a fully synthetic inside and Merino blend face. Terramar's bi-layer construction, creates an air pocket in-between both layers for additional insulation and thermal regulation.

The synthetic backside, helps to push sweat and moisture vapors to the surface to keep the wearer dry and comfortable. Merino wool, is natures best at thermal regulation and odor control.

Their Merino wool is blended with nylon for an added degree of durability. Great on its own or with the Ultra Merino Pant.

Features:

• Thermoregulation Technology keep you warm and dry
  
• Merino Wool is naturally warm and odor resistant
  
• UPF Rating 50+ for great sun protection
  
• All flat seam construction to prevent chafing
• Climasense fiber fusion is designed to regulate your optimal temperature
  
• Thermoregulation technology provides comfort through a wide range of temperatures
  
• UPF rated for sun protection
  
• Odor Control neutralizes sweat and odor
  
• Moisture Management moves moisture from the skin to keep you warm and dry