The Killerspin 1-Star 40+ Ping Pong Balls 25-Pack is sure to upgrade your game. These classic training balls are updated to match the latest size and materials regulations. The white balls are perfect for practice, training, and fun! Constructed with high quality ABS plastic, the table tennis balls feature increased control and can withstand more aggressive shots. Killerspin was built to bring youth and innovation to one of the world's most beautiful sports: table tennis. The Chicago-based company produces premium-quality table tennis equipment, sports apparel and media. Killerspin was created to serve the table tennis player, while providing U.S. homes and offices aesthetically pleasing table tennis gear for head-turning style and competition-level play.