Our Foam Dodgeballs are made of environmentally friendly polyurethane. New physical foaming production process, millions of micro-pores absorb sound. Easy to Catch and Throw. Great for Indoor and Outdoor Play . This soft foam ball makes almost no sound when hitting the backboard, rim, or ground/wall. They are so light they cant really knock things over or do any damage while playing in the house. 9.5 inch diameter, solid foam ball can withstand strong pressure and quickly rebound. Whether it be dodgeball, kickball, basketball, school/camp games, or even just playing catch, these bouncy balls will make sure your child stays active and healthy. These balls are useful for all kids and adults.