You can use this water balloon to exercise hand grip ability because of its polygonal design; and it can attract childrens attention because of its bright colors.With a refreshing feeling to hot summer days, this water ball is a great choice for kids parties, birthday parties, anniversaries, pool parties and many other outdoor events.Constructed of silica gel material, it is eco-friendly and durable to use.The diameter of the water ball is 5.3cm.It is suitable for summer, beach, yard, swimming pool and so on.Item Name: Water BallMaterial: Silica GelUse Scene: Beach, Summer, Yard, Swimming PoolFeatures: Reusable, Entertaining, Parent-child InteractionSize Details:Diameter: 5.3cm/2.09" (Approx.)Notes:Due to the light and screen setting difference, the items color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:4 x Water BallIt is suitable for summer, beach, yard, swimming pool and so on.You can use this water balloon to exercise hand grip ability because of its polygonal design; and it can attract childrens attention because of its bright colors.It is a brightly colored water balloon toy that can attract childrens attention; and it has a polygonal design that can exercise hand gripping ability.A water balloon toy with a polygonal design that can exercise hand grip; and it is brightly colored to attract the attention of children.Using this water balloon toy can attract childrens attention because of its bright colors; and it can exercise hand gripping ability because of its polygonal design.