US Games Color My Class See Thru Knobby Ball Set, 6-Inch Rubber Soft, flexible foam-like construction with tactile bumps makes the balls easy to throw and catch Ideal for helping little athletes boost their confidence and hand-eye coordination Balls move slowly through the air for simple tracking, increasing the amount of successful catches Can be inflated or deflated to meet the needs of players of different skill levels Comes with one ball each of blue, green, orange, purple, red and yellow 6" Diameter