durable material - this pro basketball system is constructed of heavy-duty steel, a pc backboard, and an all-weather nylon net, making the whole construction more solid and stable, this hoop is designed to last through many basketball seasons. stable base - the weighted mobile base fills with water or sand ensuring standing and stability as your practice your s. and the 2 built-in wheels provides the convenience while transportation and moving. indoor outdoor paly - this professional basketball hoop is perfect for playing basketball with your neighbors, friends or family outdoor or indoor due to its easy portability with the attached wheels..syi