Since the cross bike saddle is small and it is difficult to use as it is on hand, I tried replacing it, because the diameter of the seat post was large, unlike ordinary bicycles, I ordered what I found in a monotaro. It took a while to deliver it, but it can not be helped. Installation was easy. I think that I will go cycling from tomorrow, but there seems to be no particular problem. It was saved because it was a product that I could not find in the home center etc.