Simple idea well executed. Works much better than a "holey goalie" as puck retrieval is much quicker. Also works much better than the foam style as they do not need to be reset after hitting the target (and knocking the foam out). Gives focus to the player and when used with the app makes the practice even more interesting. A direct hit on a target also results in a satisfying flip of the target round the securing cord. They also seem pretty durable - although they have been used for only 1 week so far. Overall, my son really enjoys using them.