My son loves his Keen shoes, and they wear nicely.  The only negative is that one of the bungee shoelaces wore thin in one area and massively frayed above it.  The shoe became completely unusable, because the big fray would no longer fit through the little plastic lace-tightening mechanism.  So I called Keen customer service, and they said they will send me replacement bungee laces (at no charge), which is nice, but she told me it would take 2 weeks to receive them.  Well, these are my son's regular school shoes.  So I wasn't completely thrilled with their customer service.  I would recommend that if you buy Keens and have the same problem, call them when you first notice the lace becoming worn, so that you have the replacements when you need them.