We bought this for my son for his birthday and it has been a big hit.  Not just with the kids either.  We've had adults play tetherball for the first time in years.  It's been a blast. 

We did have an issue where the ball attachment point ripped in half within a month of purchase, but again, we had adults playing.  Lifetime sent us two new balls free of charge. 

We have a tougher ball for the adults now, but the kids much prefer the ones that Lifetime makes.