I wear a size 7 and purchased a size 7 directly from the Loeffler Randall website. These fit with no room for error--my heel is just inside of the edge of the sole, same for my toes. If you're a half size, might consider sizing up. I have an average arch height and a slightly wide forefoot. Wide width shoes are too big for me, even with socks. These slides are very comfortable width-wise and the contoured footbed is supportive. While very good quality and you will look very stylish and chic, for sure--but only if you're sitting down!! These pool slides will require some serious break in time.  The stiff leather strap across the top of my foot made walking painful with EVERY.SINGLE.STEP. I've been wearing them indoors with thick hiking socks and hitting the strap with the hair dryer on high heat to stretch the leather and that has helped quite a bit. There's a reason why photos on the LR website show the models wearing socks with these slides.    UPDATE:  Nope, no amount of thick sock wearing and hair dry blowing will ever, ever, ever make these slides wearable. THEY ARE TORTURE DEVICES.