100% Polyester. Fabric: Birdseye. Design: Contrast Detail. Neckline: Contrast, Crew Neck, Ribbed Collar. Sleeve-Type: Short-Sleeved. Hem: Twin Needle Stitch. Fabric Technology: Breathable, Lightweight. Easy to Fit, High-Vis, Reflective Tape, Side Seams, Textured, Twin Needle Shoulder, Twin Needle Sleeves. 150gsm. Sustainability: Amfori, BSCI. Conforms to Safety Standard: EN ISO 20471:2013 + A1:2016 Class 2, EN ISO 20471:2013 A1:2016.