I bought these a year ago from Step (original price: ¥18,700). They're a very light and bouncy pair of spikes, and I loved them, but I'm selling them because I've outgrown them. I've used them about 10 times, only on a tartan track, so they're relatively clean. I'm open to discussing a price reduction if needed. Product Description (from the official website): Soar over the bar. These track spikes are designed to give you the power and speed you need to reach new heights. With feather-light Lightstrike Pro cushioning and a snug fit, these spikes will help you accelerate towards even higher jumps. The rubber outsole spike plate provides a secure grip. This product is part of adidas' commitment to a plastic waste-free future, with at least 50% of the upper made from recycled materials. * Regular fit * Lace closure with hook-and-loop strap * Supportive high jump textile upper * Textile lining * Archfit system * Lightstrike Pro cushioning * Spike plate rubber outsole * Upper contains a minimum of 50% recycled material