Lifetime 72005 Competition Base Height-Adjustable Portable Basketball System with 54-Inch Clear Shatter Guard Backboard Portable, height-adjustable basketball goal system 54-inch shatterproof polycarbonate backboard Arena-style Slam-It Pro rim with spring-back action Wraparound bracing for added stability Power Lift height adjustment mechanism for infinite height increments from 7.5 feet to 10 feet