41% Polyester / 40% Recycled Polyester / 19% Elastane. Stretch To Give Full Range Of Motion. Opti•Dri™ Wicks Away Moisture To Keep You Dry. Lightweight Single Knit Fabrication. Self-Fabric Collar. 1/4 Zip Closure. Heathered For A Two-Toned Look. Short Sleeves. Machine Wash