I purchased these sandals to wear for wet landings in the Galapagos where I could do hikes wearing the same shoes. They performed and fit flawlessly. I love the adjustable, quick release/tightener, works great.  My only complaint at the time, is they take forever to dry,the top straps should be made of a better quick dry material, straps were still very wet 24 hours later.  When wet and on a short hike, I did get a blister on the ball of my foot once but otherwise they were very comfy to wear, decent arch support too.  But my HUGE complaint is the entire sole of both shoes peeled completely off when on an 8 mile hike on a dirt & rocky trail in Yelapa, MX. Luckily these sandals have a 2nd soft sole so I was able to get back still wearing what was left of my sandals.  I've owned these sandals for about 6 years but have worn them on just a few float trips so there is no way they should have fallen apart!  I'm calling Keen to get my money back, soles peeling off should not have happened, especially with such little wear!!. Hopefully they are lemons.  FYI.. I own other Keens and they all have held up very well.