I know that its past the 30 days. My family and I were on vacation when we came back the 30 days where gone. I would like to keep them ,but exchange for a different size perhaps. I bought a size 11 and the cross straps are really loose and doesn't keep my foot in place.<br />So maybe a size smaller would do the trick. I think that a size 10.5 will work .<br />Please let me know so I can return them. And by the way I only wore them maybe twice and put them back in the box and only in doors also.