We bought this basketball hoop a year ago for our son's second birthday. It's an adjustable height plastic backboard and stand, and included a small basketball. It adjusts from three feet to six feet high fairly easily. One direction has the lowest height, then you place the pole in the other side to adjust from four to six feet.
We've used this hoop down in our basement, so it hasn't been exposed to the elements. We have had it outside a few times. If you put it outside, you have to weigh it down so it doesn't blow over. They have a hole where you can fill the bottom with sand - we've just never done that since we like the flexibility.
The small basketball it comes with is the perfect size for young boys' hands. The only problem we have had with it is it has a tendency to deflate.
So far, our son has really enjoyed this basketball hoop. He still plays with it a lot a year later. It was a good investment for us.