100 White 3-Star 40mm Table Tennis Balls Advanced Training Ping Pong Ball Advanced training balls Good bounceMore Power Ball Weight (g): 2.7-2.85 Ball Diameter (mm): 40.140.25 MAPOL is a Registered Trademark of Great Store Attention :100% MONEY BACK GUARANTEE For 60 Days customers satisfaction . Any unhappy ,Please contact seller ( Great -Store ) directly for best solution