I bought these for a marathon, but my toenails always die after running more than 10 kilometers in practice, so I think they don't fit my feet, and I'm putting them up for sale. I haven't used them in a race, but I've run about 60 kilometers in practice. I haven't worn them since I bought the Vaporfly 4. They show signs of use, but the tread is still in good condition, and there's no noticeable wear on the soles. The upper part is also intact and still wearable. Of course, there are no air leaks. These are genuine products purchased from the Nike app. Box included.