MacGregor® regulation size and weight rubber volleyballs with nylon windings and butyl bladder construction. 1-year guarantee. Available in Red, Yellow, Blue, Green, Orange and Purple. All prism packs include one of each color. With Top Quality MacGregor rubber balls. We have the ultimate color management system with SIX colors! Use our system and provide each group with its own unique ball color! No more arguments about whose ball is left on the field or whose turn it is to play. If its your color, its your ball. All balls come in red, orange, yellow, green, blue and purple. All prism packs include 6 balls - one of each color.