AAE's portable discus cages feature 4"" aluminum posts with a 3' offset to prevent deflection, standing at 14' for high school events or 17' for college events. The weather-treated nylon safety net is easily set up and taken down with a simple pulley system, and offset eye-bolts secure the bottom of the net. A backup net is included to keep spectators at a safer distance. The cage complies with all NFHS and NCAA rules and regulations.