100% Ringspun Cotton. Fabric: Jersey, Twisted Yarn. Design: Plain. Neckline: Crew Neck, Ribbed, Seamless. Sleeve-Type: Short-Sleeved. Hem: Twin Needle Stitch. High Stitch Density, Quarter Turned, Taped Neck, Taped Shoulders, Tearaway Label, Twin Needle Collar, Twin Needle Sleeves. Fit: Regular. Please Note: Side Seams On Sizes 3-4 & 5-6. 144gsm. Conforms to Safety Standard: CPSIA Tracking Label. Sustainability: Fair Labor Association, Oeko-Tex Standard 100 Certified, REACH, Sedex, WRAP Certified. 12-13 Years: 34 in. 5-6 Years: 28 in. Ref: UTPC6591