100% ring spun cotton (except RS Sport Grey: 90% cotton / 10% polyester). Reinforcing tape at the neckline. Ribbed cuffs. Double needle finish at the bottom of the garment. Fabric turned a quarter turn to eliminate the center crease. Loose fit. Detachable label. Certified STANDARD 100 by OEKO-TEX® No. 68255, OeTI. Premium quality cotton for optimal decorative surface. Soft touch and comfortable to wear. Detachable label, easy to re-label. Dry cleaning prohibited