100% Cotton. Fabric: Fine Knit Gauge, Jersey, Tubular. Design: Plain. Neckline: Crew Neck, Lycra Ribbed, Taped. Sleeve-Type: Set-in, Short-Sleeved. Fit: Regular. 165gsm. Sustainability: Oeko-Tex Standard 100 Certified. 3-4 Years: 30 in. 1-2 Years: 24 in. 5-6 Years: 32 in. 2-3 Years: 26 in. 14-15 Years: 42 in. 12-13 Years: 38 in. 9-11 Years: 36 in. 7-8 Years: 34 in. Ref: UTLT2824