I have to say I'm quite disappointed with these shoes. I read other reviews before buying and the complaints about getting heel blisters is absolutely accurate. I thought before purchasing that it must have at least been partially user error, with people using these shoes for long hikes and wearing them maybe longer than they are intended for (also maybe not giving them a chance to break in), but since I planned on using them as actual water shoes for when I go to the river I figured it'd be ok.<br /><br />When I tried them on I could immediately feel the problem with the heel. The problem is that right where your heel tendon hits the shoe is where the seam sits and its EXTREMELY STIFF. Almost as if it were glued. While walking that then rubs against your tendon and causes immediate discomfort. I knew this was a problem before taking it out to the river, and hoped I could break it in some so I wrapped my foot in some athletic tape to give my skin some protection. It didn't help all that much. After about two hours of wear (no hiking or rough terrain) I got pretty painful blisters.<br /><br />It's a huge shame too because otherwise these shoes are VERY comfortable and exactly what I was looking for.<br /><br />I will probably be returning these.