Size: Size 3 ball This item is new and unopened, but was obtained as a long-term storage item (deadstock). I opened and used a similar item that was stored in the same way, and it worked without any problems. There is no deterioration or drying of the rubber, and it can be used just like a new ball. I will sell it for 600 yen per ball, including shipping. This is a good quality item at a bargain price, so please refrain from price negotiations and purchase it as is.