Lightweight and breathable running shoes. Thank you for viewing. Nike Running Shoes "Air Zoom Rival Fly 4" (AIR ZOOM RIVAL FLY) Model Number: FV6040 Size: 27.5cm I used these for running even on rainy days, so there is some dirt, but I haven't used them many times. The soles still have plenty of life left. I haven't washed them at all.