High-quality materials: AOKUNG profession Basketball system is constructed of heavy-duty steel, durable polycarbonate backboard, and an all-weather nylon net. This basketball hoop is designed to last through many basketball seasons, and the transparent shatterproof polycarbonate backboard, enough to handle the most intense competition and bad weather. Stable base: The mobile base can be filled with water or sand to ensure your safety and stability when shooting the basket. Two built-in wheels provide convenience for transportation and movement. Height-adjustable junior basketball hoop: The height of the basketball hoop can be adjusted from 5.6ft to 7 ft, suitable for boys and girls of different ages to practice basketball. This products also is swimming poor basketball hoop, suitable for adults and kids. Both indoor and outdoor use: The portable basketball hoop can be used for gyms, swimming pool and public parks practice. The children can develop their basketball hobby anytime, anywhere. The AOKUNG basketball hoop is the best gift for children, giving them a strong physique, a childhood happiness, and a confident specialty. Overall Dimensions: Backboard size 28*18(L*W),Adjustable Height 5.6ft-7ft,Base size 29''*22''*5.5((L*W*H),Rim diameter:17''.Assemble needed.