The Alpinestars seem to be true to size for lenght and wider than street shoes, but with the buckles you can make them conform to your feet. I have wide feet and needed a wider boot, I tried on a few boots (can't remember which ones) that were too tight without the buckles closed. You can make a wide boot tight, but you can't widen a tight boot. Some of the Alpinestars come with an inner bootie, I thought those were all too tight. If you can, find a dealer who has a large stock, so you can try multiple brands/styles and compare them back to back. I tried quite a few before I found one that fit right.