I am going to order a Bont Jet just as soon as I figure out what size to order. My foot measures 295 cm. I have seen no less than 4 different Bont size charts on the web and it;s really confusing. They have me in any thing from 10, 10.5, 11 aand 11.5. I want them tight but once you heat them you can't return them. Anybody??