Son super cómodas. I had circles hooks that came with my rack. Invalid. I used to teach spin before the covid pandemic and these will keep me in the saddle till it?s over so I can resume teaching classes! At least this will be secured inside the clamshell and will provide additional crush protection. These are great - $25 price range. They are none too big and I had to really look at them and decide whether I could wear them or not as an 11. It changed my life! Definitely the best slippers I have ever bought, Great value know they are a bit more expensive but well worth it well made comfortable warm I know you think they would last a long time but I would definitely buy again. In order to turn it on, you need to press and hold the button on the left side of the USB dongle (primarily used for switching between mix pre-sets).