Asics racing shoes, Sortiemagic, 27.5cm. These are racing shoes my son used about 12 years ago. He only wore them about five times in 10km road races. They are very light, with one shoe weighing 155g. You'll be surprised at how light they are when you hold them. They are still in good condition, so I hope someone who wants to improve their record will use them. By the way, my son's personal best for 10km was 29 minutes and 43 seconds.