They are very light and easy to run in. The plate is almost carbon, so they have a lot of bounce. I have used them for many years as training spikes. As you can see in the 6th picture, the bottom right pin is broken. I think they can still be used if repaired, but please refrain from purchasing if you are concerned. - Brand: adizero - Color: Orange - Type: Spike Shoes - Features: Lightweight Design Thank you for looking.