Perfect for a highly competitive game, the Lifetime Slam-it Pro 54in adjustable portable basketball system offers a steel-framed acrylic backboard delivering rigidity and a professional feel. To allow for hours of dunking, there is an 18' (46cm) solid-steel Slam-It® rim, whilst a patented Power Lift mechanism ensures quick and effortless height adjustment from 229cm (7.5ft) to 305cm (10ft) in infinite increments. Extra stability for intense play is provided by XL portable base that can be filled with sand or water (up to 159 litres). This heavy-duty basketball system has an all-weather net that gives the perfect shoosh to your shots.