I have no foot ,but I can run. I have no leg ,but I can jump

I have no foot ,but I can run. I have no leg ,but I can jump. 下面还有
I have a big belly, but I don't eat anything .I have a big belly ,but there is only air in it .I like someone kick me with his foot ,but I don't like someone passing me with his hands.Do you know my name?