This is my second pair of Keene water sandals- my last pair lasted 6 years.  Upon breaking them out of their box, I have worn them pretty much non-stop and they fit like a glove:  no rubbing or chafing of my feet/heels, arch supports feel great, and are true to size.  When they get wet, they dry quickly; perfect for canoeing, kayaking, fishing, and short day hikes.  In addition to outdoor activities, I also wear them for running errands or grocery shopping.  I love that your toes are protected (especially during outdoor activities), but your feet stay cool in the summer heat.  They are a bit pricey, but WELL WORTH THE MONEY!