this Inflatable Water Jogging Ball can be used on water,swimming pool, ... with high frequency, airproof, air hole protected under double deck to reduce air leaking.6.UnderstandabilityThe product is ... lido We have stable order of 300 Inflatable Water Jogging Balls every month from our old customer, and we ... to provide unique, high quality Inflatable Water Jogging Ball, and professional service to you!