Unfortunately our vans existing roof bars couldnt be adjusted sufficiently to fit our roof box. But these sandals definitely run large! You can’t really dispense cotton swabs from a hopper style like this. I bought these for my 7 year old and she loves them. I wear a size mens 12 medium. I couldnt believe what this little pill could do. I have been buying these great slippers for several years now. Keep in mind that again when I say I use mine everyday I mean literally all day for phone calls incoming-outgoing and enjoying YouTube and singing in my favorite app Smule Sing! too thin to do any good and require constant adjustment. I ended up using these in a bathroom cabinet instead of kitchen as they were too deep for my cabinets.