1SPECIFICATIONS: Including 5pcs elastic tennis ball, 6cm in diameter, suitable for children and adults, which are easy to control and grasp. 2APPLICABLE SCENES: These elastic balls can bounce and float on the water, suitable for swimming pool, ocean, beach games, group entertainment. 3RUBBER MATERIAL: These tennis balls are made of rubber, with good elasticity, environmental friendly and non toxic, can be used with confidence. 4PRESSURE RELIEF: It is not only a water elastic ball, but also an elastic ball that can be squeezed to relieve anxiety, which is suitable for office workers. 5FABRIC FINISH: These elastic balls have a fabric appearance, which is not easy to slide at will, wear resistant and scratch resistant.