Really just tiny adjustments. What a great Customer Support group! Had to return for a bigger size which didn’t offer the lining option. I definitely have wider feet and these worked perfectly with my foot shape. I didnt really know the shoes would be supportive but they matched my dress and thought if I could just wear them a few hours it would be ok. The first rack I got has a small flaw on the back side that is not visible when the rack is hung. I want a pair of these". The sound quality is very good too. Sound, design, volume, Im glad I saw the review from 2RCPRODUCTIONS on YouTube to help my decision! I will update as I start to use them more frequently.