I bought these based on the reviews & was concerned about size & width.  I went w/ my normal size 6.5 and they are perfect for me.  I do not wear heavy socks, and if you do it might be a bit tight.  Also, the cushion is removable... that could help as well.  But, that's what gives it a nice "walking on air" feeling.  I usually have problems on my instep, but stretched them for a couple days-- ( stuffed the upper part ).. Just enough for extra flexabliity. I'm sure the more I wear them, they will stretch out a bit.. It's the perfect walking shoe, casual, the most comforable I've had.  My other concern was the back of the shoe being too high and hitting my back ankle-- not the case here.  I highly recommend this for the walker, shopper and everyday use.  Good quality & worth every penny.