This portable basketball system features a 121 cm steel-framed shatterproof backboard with a speed shift height adjustment mechanism that adjusts from 243 cm to 304 cm high. It also includes a slam-it rim with an all-weather nylon net and a 7.6 cm diameter round steel pole. With a 128-liter portable base, this system can easily be moved to the desired location. So bring the arena to your home with a residential basketball system. Lifetime