I've bought several pairs of the KSO as they wear out every couple years but this was my first time purchasing this pair and probably my last. First off they're about 1/2 a size too big which baffles me since my KSO fit perfectly. More importantly however, the seem on the big toe blew out after about a month of daily use. I'm not a seamstress but also not incompetent so I was able sew it back up with some black thread and a needle. If you look closely it looks sloppy but it's held for the last couple months. Disappointing that it was ever necessary though.