63% Cotton, 27% Polyester, 10% Elastane. Fabric: Chambray. Fabric Technology: Lightweight. Design: Plain. Fastening: Back Button. Neckline: Round Neck. Sleeve-Type: Short-Sleeved. Back Style: Keyhole. Sizing Template: Chest: (3-4Y) 21.5-22.5in | (5-6Y) 22.5-24in | (7-8Y) 24-26in | (9-10Y) 26-28.5in | (11-12Y) 28.5-30.7in | (13Y) 30.7-33in | (14Y) 33-34.7in. Ref: UTMW5225