Compare with ordinary dumbells,the water inflatable dumbell advatages as following: 1.The weight can be adjustable 2.When exercise,it can accompany with beautiful music 3.If need, it can add electronic flash function 4.The surface of the products is popular,leads to the way to the international world 5.It has large use scope,is used to both Children and Adults 6.It has various kinds of specifications and styles,determined by yourself 7.Bottom price,super share,worth use!