... popular 2.Durable,replaceable 3.Timely delivery Water roller,plastic roller ball,water walking roller New product, interesting, exciting, popular Specification:2.4x1. ... material is replaceable, which is very durable. 3.The new roller ball floats on water based on the two PE wheels ... bearing, and come back to the shore. 4.The new roller only has a single material, players will have the impressive ...