100% Cotton. Fabric: Single Jersey. Design: Plain. Neckline: Covered Seams, Crew Neck, Double Layer, Knitted, Reinforced, Ribbed. Sleeve-Type: Short-Sleeved. Coverstitch Detail, Reinforced Seams, Side Seams, Tearaway Label. 155gsm. Sustainability: Oeko-Tex Standard 100 Certified. 11-12 Years: 31.5 in. 7-8 Years: 28 in. 1-2 Years: 23.5 in. 3-4 Years: 25 in. 5-6 Years: 26.5 in. 9-10 Years: 30 in. Ref: UTLT4516