The Havaianas Kids Max Herois flip-flops in Black/Yellow are designed for kids. The size UK child is 12. These flip-flops feature a PVC strap and a comfortable, durable, lightweight, heat-resistant, non-slip, and water-resistant rubber sole. Please note that when purchasing Havaianas flip-flops on Amazon, the BR/Supplier size should be considered equivalent to the EU size, regardless of what is displayed on the product sole.