Ultra-durable coated-foam ball is intended for heavy, institutional use. Thick outer coating withstands countless kicks and daily abuse, while medium-density foam inside maintains its resiliency without breaking down or absorbing water like lesser-quality molded-foam balls. New Screamin' Rainbow™ colors are super-visible, fun, and good for class organization. Sets of 6 includes 1 of each Screamin' Rainbow™ color.