Boys school shirt. Short sleeved. Machine washable at 40C. Easy iron. Materials: 65% Polyester/35% cotton. Size guide (Collar size/ Chest size): 2-3 Years - 11in/22.5in, 3-4 Years - 11.5in/24in, 5-6 Years - 12in/26in, 7-8 Years - 12.5in/28in, 9-10 Years - 13in/30in, 11-12 Years - 13.5in/32in, 13-14 Years - 14in/34in. Ref: UTSHIRT387