Hop! Hop! Hop! Kids will love feeling like a kangaroo. These heavy duty vinyl balls with built in handles are great for building large muscle strength and balance. Available in 2 sizes: Large - 24" (60cm) diameter for children ages 8-up or Small - 16" - 20" (45cm-50cm) diameter for 3 to 8 years. Balls inflate and deflate with ease. Colors may vary on solid color balls.