Crown Sporting Goods White Regulation Size Lacrosse Balls in Mesh Storage Bag (Set of 6) Six 2.5" regulation size white lacrosse balls Solid, vulcanized rubber; Excellent hardness rating for outdoor practice Includes a handy, reusable mesh bag for carrying and storage Also excellent for massage therapy; Hard rubber works wonders for trigger points, muscle knots and myofascal release in athletes and active bodies Tired of your big dog destroying tennis balls? Compare these to other rubber dog toys, but at a fraction of the cost