Eighteen height settings sounds like a spec until you watch three kids of different ages take turns on the same hoop. Stack two poles and the rim sits between 3.3 and 4.9 ft for the youngest three poles put it at 5.6 to 7.3 ft four poles reach 8.4 to 10 ft for regulation shooting. Height changes need no tools and no disassembly, so nobody loses interest waiting for the adjustment.The backboard is shatterproof, impact-resistant Pc measuring 38 by 22.5 in, with reinforced corners and a sturdy metal back support frame carrying an 18 in rim. Below, a triangular base measuring 37.5 by 22 in fills with sand or water, and the included water bag adds 40 lbs of sand for extra hold on the 40 lb frame. Two smooth-rolling wheels move the whole system between an indoor court, a backyard, a driveway and the poolside, where it doubles as summer entertainment. Overall height spans 4.8 to 11.5 ft, and assembly is straightforward with the included user manual.