Product Description: This is a ski training device for children. Purchased about 5-6 years ago. There are scratches and rust, but it functions without any problems. You can find usage videos by searching for "Hookease Ski Trainer" on YouTube. It attaches to the back of a child's skis and the tips of an adult's ski poles, allowing you to pull them from behind while they ski. You can help them make a wedge shape with their skis, and also make slight edge adjustments from behind. Compared to harnesses that attach to the body, it's less likely to cause them to lean back, and it's easier for them to learn the movements of their legs.