100% Cotton. Design: Flames, Logo, Printed, Racing Cars. Neckline: Crew Neck. Sleeve-Type: Short-Sleeved. Fabric Technology: Breathable, Soft. 100% Officially Licensed. 11-12 Years: 31 in. 9-10 Years: 28.5 in. 3-4 Years: 22 in. 5-6 Years: 24 in. 7-8 Years: 26 in. Ref: UTNS8530