100% Polyester. Fabric: Birdseye, Knitted, Performance. Design: Contrast Detail, Piping. Neckline: Crew Neck, Self Fabric. Sleeve-Type: Raglan, Short-Sleeved. Hem: Twin Needle Stitch. Fabric Technology: Moisture Wicking. Panelled. 140gsm. Sustainability: Amfori, BSCI.