SKLZ Portable Basketball System with 50-Inch Backboard Portable, height-adjustable basketball system with 50-Inch backboard 35-Gallon base fills with water or sand and has 2 built-in wheels for easy portability and maximum stability Quick-release pin makes for easy height adjustment from 8-10 feet, in 6 inch increments Polycarbonate, shatterproof backboard with steel frame and shock absorbent rim UV resistant nylon net and backboard