[A.4号 KW-142]
[B.5 KW-143]
Great for a variety of occasions, from lifting practice, to easy games, and leisure.
This product is for leisure. If you are using it professionally, it will not be able to use it.
In order to preserve the quality of the product, there may be some deflation. Use a commercially available air pump to inflate it.
The size listed is the maximum size. If the product is inflated, it may burst.