3 Pcs Tennis Training Ball With String, Trainer Balls Self Practice and Replacement Tool, Ideal for Indoor and Outdoor Practice

I purchased these to replace the one my son was using for his vision therapy. The elastic came unattached from the first two within a day or two of use because the elastic would slide out. For the 3rd one I used the elastic to thread the old vision therapy string through the ball and it has last much longer. These definitely need a better attachment because the elastic won’t stay knotted and easily slides out.

This is so good to be able to play solo. I purchased the one with the string attached to a base and that worked perfectly until it broke so I bought this. The only thing with this is that the string coils around the ball on the way back and sometimes makes it hard to get the next shot. But other than that. Good replacement.

Very bad

We went through all three of these within 48 hours. They break so easily.

After a couple hard hits the ball breaks off string.

The ball broke open after the first few hits

I bought it for my son and I had to buy him a new one after the string broke after a week of using it