Ergodyne GloWear 8397 High Visibility Reflective Crew Neck Sweatshirt, 2X-Large Thermal- lined with warm polyester polar fleece Hi Visibility- made with ANSI compliant lime background materials for increased safety Silver Reflective Material- every square inch meets the ANSI 107 standard, flexible heat transfer material for maximum comfort Moisture-Wicking-wicking fabric move moisture away, dry fast and keeps you comfortable in all temperatures FITS CHEST SIZE : 46-50 Inches