65% Polyester, 32% Viscose, 3% Elastane. Fabric: Knitted. Design: Contrast Stripe. Neckline: Crew Neck, Ribbed. Sleeve-Type: Long-Sleeved. Cuff: Ribbed. Hem: Ribbed. Fabric Technology: Breathable, Durable, Lightweight, Soft. 11-12 Years: 31 in. 2-3 Years: 21 in. 3-4 Years: 22 in. 5-6 Years: 24 in. 7-8 Years: 26 in. 9-10 Years: 28 in.