Duckworth Vapor Tee - Women's High performance fabric that's lightweight, no-stink, and ultra fast drying Wool is anti-microbial, so there's no stink Summer weight wool fabric with all natural s tretch Conductive Re-Vaporation keeps you cool during exercise Materials: 38% Helle Rambouillet Merino wool / 50% Recycled Polyester / 12% Modal