... .Durable,replaceable 3.Timely delivery Water roller,plastic roller ball,water walking roller New product, interesting, exciting, popular Specification:2 ... replaceable, which is very durable. 3.The new roller ball floats on water based on the two ... back to the shore. 4.The new roller only has a single material, players will have the impressive ... replace it, it will become a new roller ball immediately!