I thought the New Balance Rock & Tone sandal would be comfortable, similar to Shape-Up products...how wrong I was. I wore them around the house to break them in before taking them on vacation with me. I wore them off the ship to go from the ship to the shopping area in downtown Nassau. I started having problems half way there. The edge of the band was sliding back and forth across my left top of my foot and a little of the same on the right. After 30 minutes, this actually dug a slice into my foot, and I had to go back to the ship to get out of these sandals. I could not keep wearing it, but didn't dare walk bare foot through the not so clean streets and port area. By the time I got on the ship, my foot was a bleeding mess. The right had a slice, but was not bleeding, just red and sore. This cut swelled, bled, hurt and had to be covered and anitbiotic cream on it for a week straight. It is 3 weeks now and I have a terrible scar. If anyone else had this problem, please let me know if you figured any way to remedy it. I hate throwing out the sandals as they weren't cheap, but I cannot wear them as they are.