I will ignore comments asking for a price reduction as this is the best price. Standard table tennis balls are 40mm. Then, 44mm balls were released for seniors. However, when actually played with, even though they are for seniors, the speed doesn't change much, and they are too small for those who are truly new to table tennis. For those people, these are the: 55mm BIG BALLS These are sold in a set of 12 balls. Even when playing with children, these will reduce the number of missed swings. Limited stock remaining, so please order soon. They will be sent by non-standard mail. Search Keywords: Table tennis, ping pong, beginner, ball, table tennis ball Butterfly, Nittaku, Victas, TSP, Yasaka Showa, Mr. Argus