If you need them a little bigger, throw them in the dryer for a minute. They will be hot and very pliable when they come out. Put them on immediately with a thick pair of socks. At the same time, you can pull slightly on the backstrap to enlarge it, but BE CAREFUL pulling the backstrap. If you pull it too far, it won't go back. I have done this with two different pairs and it has worked like a charm!