100% Polyester. Fabric: Birdseye, Knitted. Design: Plain. 160gsm. Conforms to Safety Standard: EN ISO 20471 Class 2, EN ISO 20471 Class 3. Fabric Technology: Quick Dry. High-Vis, Reflective Strip. Fastening: Pull Over. Neckline: Crew Neck. Sustainability: Oeko-Tex Standard 100 Certified. Sleeve-Type: Short-Sleeved. S: 36 in. M: 39 in. L: 42.5 in. XL: 45.5 in. XXL: 49 in. Ref: UTBC7161