I have heel spurs and the sandals are contoured to alleviate pressure on the heel. Listening to classical music on your phone or even iPod, sometimes you cant get it as loud as you might like. I ordered a 3, bc he is not even a 2. Theyre very light weight, comfy and the earpads are soft. I bought these in hopes they would be like Birkenstock?s- and they are. Sturdy enough for light hiking, but attractive enough for work. You will be unable to detect what screws to use for individual parts. As some reviews claimed the shoes run large I bought a size 7 (usually 7-7. Let me tell you, these are huge. Was slightly hesitate about buying a product with no reviews but sooooo glad I did!