Ukiwa Size: Diameter: 19.7 inches (50 cm); Recommended chest circumference: 21.3 inches (54 cm); Inner circumference: 27.6 - 29.5 inches (70 - 75 cm); Material: PVC; Recommended Age: 3 years and up; Plasticizer compliant with non-phthalates/toy safety standards; Passes ST / toy safety standards