100% Polyester. Design: Plain. Neckline: Crew Neck. Sleeve-Type: Long-Sleeved. Fabric Technology: Anti-Pilling, Durable, Insulating, Quick Dry, Symmetry Fleece. 170gsm. Sustainability: Made from Recycled Materials. 13 Years: 32 in. 7-8 Years: 26.5 in. 14 Years: 34 in. 15-16 Years: 36 in. 5-6 Years: 24 in. 3-4 Years: 22.5 in. 9-10 Years: 29 in. 11-12 Years: 31 in. Ref: UTRG9493