This might be a great pump.. However, it does NOT come with a needle and that makes it very difficult to pump a volley ball!
The description says that it is for sportballs as well as bike tires.
So we have not used it and annoyed at the description of use and the dumbness of not including a needle.
I replaced the original seat on my new bike with this gel seat. It is very comfortable. I have had absolutely no problems with it so far. I also liked that it was reasonably priced. Overall great product and pleased I purchased it.