I wear a 6.5 or 7 usually. I got two pairs of these based on reviews: 7 M and 7 W. The 7 M I could barely get my foot in and the 7W were comfortable, but on one foot it was loose enough to fit my index finger at the back near the heel so much that while walking the shoe seemed to come off. This is partly because probably my one foot is few millimeters smaller than the other, but the 7W exacerbated the issue. Overall, the shoes are very comfortable. So I am going to try 6.5(W) and 7.5 M. What a PITA online ordering is I don't see all the sizes and widths available in stores and Amazon shopping is as easy as it gets.
I would also like to mention, I do not like walking shoes with arch support, because the support always digs in the arch and I hate it. FYI, I have normal arch not too flat or not high arch. I like stability support and I have slight pronation within limits that don't cause feet issues. I have a narrow heel and slightly wide feet that for added comfort I sometimes buy wide shoes.
I ordered 8 pairs of Skechers all the go walk, go joy and go walk lite, and didn't care for any and returned them. Compared to Skechers, these Clark's are better. I just hope to find the correct size. I will update my review accordingly.
UPDATE: Turns out the 6.5W was wide throughout and 7.5 M was too big for me. I have a wide foot but normal heel, and so with the wide shoes, the heel comes out while walking and with regular size, it's too tight in the front and instep.