From the manufacturer

This long-sleeved shirt keeps you warm in cooler weather and is breathable when temperatures rise, to keep you nice and dry. It is designed to be comfortable during exercise and has flat, asymmetrical shoulder seams to prevent chafing. Also, the back panel is longer for better protection.

Features

• 100% Merino wool
• Zipped collar with fitted hood
• Flatlock seams on the shoulder seams to prevent friction
• Drop tail hem for added coverage