Made with 100% soft Merino wool fibers, the Original Merino Long Sleeve Half Zipper Top helps to regulate temperature in all weather conditions and resists odor. The comfortable pullover is great in a variety of conditions and can be worn for a range of outdoor activities with the perfect balance of warmth and performance. Added thumb loop keeps the sleeves in position and provide added protection for your hands. Care Instructions Machine wash warm. Wash with similar colors. Do not use softeners. Fasten all closures to wash and dry. Do not bleach. Do not tumble dry. Line dry in shade. Warm iron. Dry cleanable.