I normally wear a 4 or 5. Found these & they are the same styke. NO BIKE NO BIKE RACK. Overall I’d recommend this product. I have 2 others that are still intact but I guess not all are created equal. They engulf your feet like a fuzzy blanket! Great first step into making this kind of product all you need to add is snips, some measuring method and maybe something to secure the knots (just check your finished knots for slippage) I definitely like the nonskid I cant get it to fit back in the box well enough to send back, so it is going to the dump. So far working well