Women's Thermowave Originals thermal blouse made from 100% high-quality polyester yarns, giving them an excellent degree of moisture wicking from the body. Additionally, with a unique knitted fabric structure, Thermowave polyester garments provide great insulation properties and are lightweight, soft, and have an excellent fit on the body. All these features, combined with easy care, make this thermal garment a perfect choice for intense activities in lower temperatures. All Thermowave Originals garments are treated with a silver-ion finish to kill bacteria responsible for unpleasant odors. Less worries - more activities. Recommended for: Winter sports, hiking & outdoor activities.