Thank you for taking a look at my listing among many others. Random Price Drop Time (Weekend Only) This is the popular adidas model, adizero japan 5. This model uses Boost, which is now discontinued, from the adizero series. This model is packed with all kinds of functionality, including cushioning, stability, responsiveness, abrasion resistance, and temperature resistance. In particular, the outsole uses Continental rubber, providing excellent grip. (The same rubber used in tires for cars like BMW and Benz) The Boost material also has a temperature resistance of +40° to -40°, making it versatile as it doesn't easily soften or harden in hot or cold weather. This model and design are no longer available, making it extremely rare for Boost users. I have only used it once for training indoors. I hope you will consider it. Thank you.