I bought my first pair at Fred Meyer.  After two months (not wearing them every day mind you, just to the dog park and on a couple Seattle downpour days) the boot split right at the bend of my foot.  I patched that hole with a bicycle tire patch since the shoogoo didn't work... then another split formed at the ankle.  Anywhere the boot bends will eventually form a split.  I bought another pair a size up... same problem.  Found a couple of pairs at the Goodwill and they, too, had splits.  I would not recommend these unless you want to sit in the rain and look pretty.  Not very functional for walking nor moving in general.