Material: environmentally friendly PVC 2. Double airbag 3. Anti-leakage plug 4. Security bayonet 5. Intimate handle 6. Smooth edges, no scratches 7. Applicable age: over 3 years old 8. Applicable scene: swimming and wading 9. PVC thickness: 17mm 10. Outer diameter after inflation: 50/60/70/80/90cm 11. Inner diameter after inflation: 18/22/26/30/33cm 12. Weight: 100/130/190/240/300 grams