I didn't feel like getting these wet to break them in, because they were SO comfortable when I first put them on that I didn't think I needed to, and I was running a bit late. So I put them on and immediately walked for about 2 hours in them (running errands, walking to an appointment, etc.). Well, I got blisters on the inner sides of my forefeet, but I can't blame the sandals. I should've followed the directions to break them in properly. I am still giving four stars because I didn't get any blisters at ALL on my heels. These are honestly the only sandals I have worn probably ever that did not give me heel blisters.  They're adorable and fit well. If the normal break in process eliminates the blister problem, I will be buying them in every color!