I bought these for my students aged from 11 - 16, (very) mixed ability, which I used along with the usual pink, soft-touch balls. Over the last 5 weeks they have proved to be very good for skills teaching, they are light and more popular with the students then the traditional pink balls. They do not seem to be as susceptible as the pink balls to changing shape (they can sometimes become more elliptical than round). They also seem to need inflating less frequently. The balls arrived quickly after ordering.
I expected this ball to come inflated. It came deflated and I had to go out and buy an attachment for a bicycle pump to blow it up. I just wish they had offered this with the product even if I had to pay extra for it.