The Spalding 44 in. Polycarbonate Portable Hercules Jr. Base Basketball System will have your child shooting hoops like a pro. Made with a polycarbonate backboard, this junior basketball system features a three-piece, 3.5-inch vertical steel pole. Once these poles are assembled, they cannot be disassembled. Maintaining optimum stability during gameplay and weather conditions is the 37-gallon base that fills with water or sand. Wheels are included for ease of portability. A Pro-Glide lift system allows the solid steel slam jam breakaway rim to move from 7.5 to 10 inches in six-inch increments.