Thats painful during long sessions. I went to the Bose support forum and others were having a similar issue. My old pair is a size 9 too, and they feel great; this new pair, not so much?the back of the slipper slides off my heel every step I take. Aber die Größen Sind schön etwas seltsam. This wine rack came just as described, with very easy to follow directions to set it up. But considering I often wear fluffy socks I went with the 7/8. Took 2 stars because of this ?? My entire ass hangs out. And also very good value for money. I have no idea why they made this decision.