Purchased a year ago, and started wearing them two months ago. They don't really suit me, and I've only run about 60km in them. Please be aware that they are not unused. This is a limited edition of the On Cloudmonster Hyper. The forefoot uses the same material as the Cloudboom Echo 3, a racing shoe, so it has more rebound than the regular Cloudmonster. This is a limited color from the Prism Collection. Men's size 25.5cm, and the box is also the limited color. Since it's a sold-out item, don't miss out!