About this item Size: Before inflation: Outer diameter: 53cm, inner diameter: 15cm; After inflation: outer diameter: 50cm, inner diameter: 21cm. Applicable audience: 2-4 year children, (20-50 pounds) Design: The surface of the swimming ring is printed in blue, green, red and pink, and the word rainbow is printed in white, making it more conspicuous in the pool and making swimming safer for children. Material: The swimming ring is made of PVC material, which has good UV resistance, fade resistance and tear resistance. Easy to use: The swimming ring is light and small and easy to fold, easy to carry, does not take up space, suitable for swimming at home and going out. Application: Suitable for beach, lake, or swimming pool, perfect for kids water play activities