Sadly, your American size equivalents don't seem to have worked here. I am a 5, and not a sometimes-5 -sometimes something else either. I could hardly get my foot into the size 7 your table stated was equivalent. Certainly not comfortable. have returned it to try a half size bigger, it may need to go back again for a full size - or I may get fed up and ask for a refund. Wrong sizing will lose sales and get peoples' backs up, especially when freepost isn't available but one has to wait for a refund. Seems careless of your marketing.