HighlightsLong-Lasting Fan Blade Cover - Double metal rings on the front fan cover, making the top of the fan anti-shock, anti-pressure. Considerate design of longitude line guarantees your safety that well prevents your fingers from getting in it accidentally.Adjustable Back and Head - Adjustable tilt-back to adapt to different needs. In height, it can be adjusted from 44.8 inches to 53 inches. When it swings from up to down, left to right, it can bring you every spot with a comfortable cool br