This is a lower limb brace for Achilles tendon rupture that I used after rupturing my Achilles tendon. I used it on my left foot. It can also be used for muscle strains, sprains, and fractures. The included heel plate was used on the right foot. My foot size is 26-26.5cm, but initially, the orthotist fitted me with a size M. I only used the AirSelect Elite for one week. There are no noticeable scratches or damage, and it is still in usable condition. It's clean.