100% Polyester. Fabric: Birdseye, Knitted. Design: Reflective, Striped. 160gsm. Conforms to Safety Standard: EN ISO 20471. Fabric Technology: Moisture Wicking, Quick Dry. Fastening: Pull Over. Neckline: Crew Neck. Sustainability: Oeko-Tex Certified. Sleeve-Type: Short-Sleeved. S: 36 in. M: 39 in. L: 42 in. XL: 45 in. XXL: 48 in. Ref: UTBC6885