Sherpa's long sleeve thermal top is a winter staple for all environments, made from ultra soft technical PCD II polypropylene. Our winter baselayers provide outstanding insulation and will work to retain natural body heat for superior warmth. Polypro is a lightweight, affordable thermal option that never compensates in quality and warmth and will last the test of time. It will not absorb moisture, keeping you dry and protecting your skin for rubbing and abrasion making it easy to keep fresh for multi day users. Featuring quick dry properties and providing snug warmth and comfort without the weight our PCD II polypro range is the perfect option for overnight hikes and tramping in the outdoors or for general winter comfort around the house. Undergoing extensive university research and field testing Sherpa has designed a polypro like no other designed to enhance natural performance. Automatically designed to fit snuggly and absorb moisture with the lowest thermal conductivity of any traditional fabric plus outstanding insulation Sherpa's polypro is a no brainer for you and your family. Stretch, run, cycling this polypro long sleeve thermal top will move with you and never let you down. Features The most comfortable polypropylene Ultra soft to touch Lightweight superior warmth (190 GSM) Raglan sleeves for comfort Excellent moisture management Quick drying Care Machine wash. Do not tumble dry or iron. Dries very quickly. Full details on the care label.