100% Polyester. Design: Plain. Neckline: Crew Neck. Sleeve-Type: Long-Sleeved. Fastening: Pull Over, Pull-On. Fabric Technology: Breathable, Isotherm, Lightweight, Moisture Wicking, Quick Dry. Waistline: Elasticated. Contents: Pants, Top. 2-3 Years: 21.5 in. 9-10 Years: 28.5 in. 7-8 Years: 26 in. 3-4 Years: 22.5 in. 13 Years: 33 in. 11-12 Years: 30.5 in. 5-6 Years: 24 in. Ref: UTMW3658