I have loved these for years but my feet grew during pregnancy and they are now too tight. These must have been 1st edition because I got them about 25 years ago. However, they are still amazingly comfortable and have held up so well. They are also resolable, which I would do if I could still wear them comfortably. They say Size 6 but that must be in UK. According to the site size chart, that should be an 8.5 (which would be perfect for me now) but I’d say they’re closer to a 7.5 or 8 at most. My Brooks running shoes are a comfortable 8.5. My Rockport dress shoes are a 7.5. Go figure. I’m just trying to give you a good buying guide.