100% Polyester. Design: Reflective. Neckline: Crew Neck, Ribbed Collar. Sleeve-Type: Short-Sleeved. Hem: Twin Needle Stitch. Fabric Technology: Breathable. Reflective Strip, Textured, Twin Needle Sleeves. Conforms to Safety Standard: EN ISO 20471:2013 + A1:2016 Class 2, RIS-3279-TOM. 150gsm.