Warmth without overheating. Made from Merino RunWool(TM), this insulating mid layer naturally regulates your temperature with its high wool content. With a clean crew neckline and functional details, this one&';s built for serious layering in serious conditions. We love it for: cold weather running Merino RunWoolTM: 80% merino wool & 20% nylonKnit jersey Warming, wicking, breathable & odor-resistant Semi-relaxed fit Heat map inspired decorative stitching Watch windows Thumbholes Machine wash cold, tumble dry low, don&';t bleach Designed in California, made abroad