Onyx-Arctic Shield-X-System Men's Lightweight Long Sleeve Crewneck Pullover polyester 100% Breathable, moisture wicking, 4 way stretch, flexible side panels 180 gram polyester fleece, X-System anti-odor technology, flat seam stitched construction. machine wash cold water w/like colors; gentle cycle; use no bleach; drip dry; do not wring, do not iron; do not dry clean; China