This is my second pair so I was familiar with the sizing system. If they had some soft, washable fabric on the underside of the foot strap they would be better in my opinion. After a fair amount of walking (like going over a mile), they will chafe my skin. Otherwise solid, and quickly rinse-able.

First pair broke at the toe strap after.....4-5 Years ??? I really can't remember, but it's been a long time.