I love Saucony's and have worn them for years. Mostly I walk, not run, and they offer the best support. My right-foot size for casual and dress shoes is a solid 8.5M; my left foot is slightly smaller. I always purchase my running shoes 1 to 1.5 sizes larger. In this case I ordered a 9.5 and it's just right. There is still about a thumb's width distance between the end of my big toe and the end of the shoe. I wore them, walking around, for hours, today, and had plenty of room.