95% merino wool / 5% spandex blend Delivers ultra-soft, thermal regulating, and flexible fabric Moisture-wicking Keeps you dry and comfortable Quarter-zip design For easy dressing, increased ventilation, & temperature regulation Flatlock seams For added comfort Thumbholes on sleeves Keeps hands warm and sleeves in place Ultimate versatility Great for next-to-skin and mid-layer utilization Odor resistant For maximum scent control The Outdoor Pursuit Merino Base Series is the ultimate base layer for any outdoor activity. Having a base layer that doesn't quit until you do is a vital part of any outdoor activity. The Outdoor Pursuit Merino base series provides the perfect blend of merino wool and spandex to deliver the warmth and flexibility you need in any outdoor pursuit. The quarter-zip design allows for easing dressing, increased ventilation, and temperature regulation. A combination of flatlock seams, thumbholes, and moisture-wicking fabrics provides pl