100% Cotton. Fabric: Single Jersey, Soft Touch. Design: Logo, Printed, Seashell, Text. Neckline: Rounded. Sleeve-Type: Short-Sleeved. Fabric Technology: Breathable, UV Protection. 160gsm. Sustainability: BCI Approved. Sun Rating: UPF 30+. 7-8 Years: 26 in. 5-6 Years: 24 in. 11-12 Years: 31 in. 13 Years: 32 in. 9-10 Years: 29 in. 3-4 Years: 22.5 in. 14 Years, 15-16 Years: 36 in. Ref: UTRG11703