100% Organic Cotton. Fabric: Single Jersey, Soft Touch. Design: Plain. Neckline: Crew Neck. Sleeve-Type: Short-Sleeved. Easy-Care, Unrestricted Movement. Fit: Regular. 180gsm. Sustainability: Amfori, BSCI. 13-14 Years: 37 in. 9-10 Years: 32 in. 4-6 Years: 28 in. 7-8 Years: 30 in. 11-12 Years: 35 in.