When fully inflated, the small plastic beads fill only 1/3 of the ball's chamber, and provide an audible feedback when the ball is rolled or shaken. These beads can also provide a deadening effect and turn the balls into bean bags, depending on the degree of inflation. Thanks to their bumps and tacky surface, the Roll-N-Rattle Balls are very easy to catch and to hold.   Diameter 10 cm Weight 125 g Color blue/yellow/red    Recommended for Children aged 3+