The 10X Mens Thermostat Crew Shirt harnesses all the benefits of merino wool to keep you warm, dry and odor-free. 200-gram 60/40 merino wool/acrylic jersey boasts excellent thermoregulation performance so you stay comfortable during your stop-and-go adventures. Moisture-wicking, insulating and exceptionally breathable main fabric also naturally manages unwanted odors, making it ideal for hunting. Integrated stretch allows full mobility. Material: Merino Wool, Acrylic.