Premium Material This swimming pool basketball hoop constructed of heavy-duty steel, a PE backboard, and an all-weather nylon net. Build kids' fine motor skills, develop visual tracking, and enhance kids interest in sports. Heavy Duty Backboard The highly-durable 35" wide backboard is constructed of high-density polyethylene for excellent strength and stability. Maximum Applicable Ball Model: 7#. Height Adjustable The telescoping mechanism adjusts from 3.1ft to 4.7ft, it will be fit for children of different ages to enjoy aquatic basketball games. Stable Base The base can be weighted down with 132 lbs water or 154 lbs sand to increase stability and is less prone to dumping and shaking.