Sensory play for little superstars! Children will love these unique textured balls. They are soft and stimulating. Enhances gross motor and tactile skills, encourages crawling, grasping and coordination. Softly rolling the textured balls on a child's back or feet heightens sensory awareness. 13 cm small green triangle ball, 18 cm red sensory see me ball, 10 cm 2 small sensory balls, 6.5 cm peanut purple ball, 7.5 cm 2 massage roll balls, 18 cm rainbow soft ball, 13 cm stripe ball.