NOBULL Men's Blended Merino Wool Mock Neck Long Sleeve Shirt Black XXL NWT New with tags 59% Merino Wool. 38% Lyocell. 3% Spandex. Your premium Merino Wool mock neck for colder weather workouts. Soft, adaptable Merino Wool naturally works with your body heat so you can train in any temp while deflecting moisture and odor.