100% Polyester. Fabric: Birdseye. Design: Contrast Detail, Textured. Neckline: Crew Neck, Ribbed. Sleeve-Type: Short-Sleeved. Hem: Twin Needle Stitch. Fabric Technology: Breathable, Flexible, Lightweight. High-Vis, Reflective Tape, Side Seams, Twin Needle Shoulder, Twin Needle Stitching. 150gsm. Sustainability: Amfori, BSCI. Conforms to Safety Standard: EN ISO 20471:2013 A1:2016, RIS/3279/TOM ISSUE 1:2016. Ref: UTRW9207