Designed for recovery after running, OOFOS feel so amazing on your feet that they have become popular just for that reason. Easy to slip on with 4 way stretch canvas. American Podiatric Medical Association approved. Superior impact absorption. The footbed reduces stress on knees, ankles and joints. Closed cell foam is machine washable and odor resistant. These two pair were worn a handful of times and have only a few light marks as noted in photos. No damage or defects. In great condition.