The metal U-shaped base makes the stand reliably steady and prevents wobbling on the ground. The entire metal frame is strong enough to support a weight of 330 lbs. Moreover, the triangular structure and non-slip foot pads prevent rollover for enhanced stability. The stand height can be adjusted from 77"" to 93"", meeting the needs of both adults and children. You can easily choose the most suitable height and fix it with the knob screws.