The Olive Massage Ball is textured to provide sensory enhancement and relieve tension   Moderate softness and suitable modeling contribute to a childs finger dexterity. 1.Olive Massage Ball is easy to hold and grip. 2.Sensory enhancement from hand griping and releasing. 3.You can take turns to use one hand or both hands. 4.Olive Massage Ball is small and easy to carry. 5x11cm