Lifetime 48 Inch Portable Basketball Hoop 48" Shatterproof backboard provides a virtually unbreakable playing surface All-weather resistant, designed to withstand the harshest elements Speed Shift height adjustment mechanism easily adjusts from 8-10 feet in 6" increments Solid-steel Slam-It Rim with double-compression springs and welded net hooks 31-Gallon base can be filled with water or sand; 5-year warranty