100% Cotton. Fabric: Crimped Yarn, Jersey, Pre-Shrunk. Design: Plain. Neckline: Crew Neck, Double Layer. Sleeve-Type: Short-Sleeved. Double Stitched, Neck Tape, Side Seams. Fit: Slim. Sustainability: BCI Approved, Fair Wear Approved, Oeko-Tex Standard 100 Certified, Organic Cotton, REACH. Ref: UTBC5212