Sole started separating from the shoe after 11 months. It seems to work better an inch or more away from my mouth, but not sure of all of the variables. Second, the drywall anchors are far too large. They say you can machine wash the slippers, but I would be worried that they would shrink. Its worth noting that a lot of people prefer slightly boosted lows and highs though, and these may pull off keeping both groups happy. At this price, I’m really impressed. my sneakers came today ! I tried to find out what these cheap Chinese sandals were made of at such a low price of $20. On top of that, no assembly instructions were included. Packaging was good and it was delivered propmtly.