90% Cotton, 10% Polyester. Design: Books, Printed, Text. Characters: Mickey Mouse. Neckline: Crew Neck. Sleeve-Type: Short-Sleeved. 100% Officially Licensed. 153gsm. 9-11 Years: 36 in. 7-8 Years: 34 in. 5-6 Years: 32 in. 3-4 Years: 28 in. 12-13 Years: 38 in. Ref: UTBI54990