Sportime Multi-Purpose Inflatable Balls, 4 Inches, Yellow, Pack of 12 The Sportime Yellow Inflatable Ball has a high-tactile surface, making it easy to hold and catch. It is made with our seam-free rotational molding process and includes a standard athletic valve to adjust the size, bounce and resistance. Measures 4 inches. Used for juggling, paddleball activities, Fling-It, baseball, softball, hand squeeze exercising and more Includes a standard athletic valve to adjust the size, bounce and resistance Features a high tactile surface making it easy to catch and hold Perfect for school or home use