The spalding nba junior series portable basketball system is designed for use with size 3 and 5 balls and is suited to children up to 8 years old the system has an eco composite backboard with nba and spalding logos on it this piece of basketball equipment is both stainless and weatherproof and the pole is round telescopic and in three parts the rim can be placed at heights between 137 and 198cm 54 and 78in and to ensure excellent stability for great playability the 53 litre base is larg