Baby Neck Float Ring [Set Contents/Accessories] Neck float ring, hand pump, Japanese official guide (instruction manual) [Body Size] When inflated: Inside of the ring (neck circumference) approximately 25-30cm, inner diameter 8.5-9.0cm, outer diameter of the float approximately 40cm (all sizes vary depending on the amount of air) [Material] PVC plastic (※Does not use Bisphenol A) [Country of Manufacture] China [Target Age] Up to 18 months and weighing up to 11kg (※Do not use if the child's chin does not rest on the product, or if there is not enough space between the product and the child's neck to fit two adult fingers).