80% Cotton, 20% Polyester. Design: Plain. 260gsm. Hem: Elastane. Neckline: Crew Neck, Knitted, Ribbed. Cuff: Elastane. Sleeve-Type: Long-Sleeved, Set-in. Fit: Comfort. Fastening: Pull Over. Sustainability: Better Cotton Initiative, Fair Wear Approved, Oeko-Tex Standard 100 Certified, PETA-Approved Vegan, RCS Certified. 12-14 Years: 39 in. 9-11 Years: 36 in. 5-6 Years: 31.5 in. 7-8 Years: 34 in. 3-4 Years: 28 in. Ref: UTFK1971