SOL'S CRUSADER KIDS,kids round-neck fitted jersey t-shirt, 100%  organically grown cotton, natural finish for a softer and smoother feel jersey 150, 100% cotton ribbed collar, crew neck, taped neck, fitted cut, cut and sewn, (1) heather beige : 60 % organic cotton / 40 % recycled polyester, (2) heather light green : 60 % organic cotton / 40 % recycled polyester, (3) heather pink : 60 % organic cotton / 40 % recycled polyester, (4) grey melange : 85 % organic cotton / 15 % viscose. About sizes matching, please refer to the size chart in the product documentation section.