Skysaver is a speed-reducing escape backpack that can reduce the descent speed to a safe range to ensure a safe landing. The backpack has a built-in deceleration control system that can automatically control the descent speed within the range of 1 to 2 meters per second. The backpack rope can be up to 80 meters long, which means that if it is 3 meters per floor, the highest level is 26 floors. Suitable for use, the rope is a fireproof rope that has passed the American Society for Testing and Materials (ASTM) standards, and the quality is quite reliable. Of course, in the absence of a crisis situation, fixings must be installed at the windows in advance.