I'm a size 7 so I purchased the S-M socks to go under my new Tabis. When I first put them on I was afraid they would not fit correctly, but the heel stitching sits at the right place on my foot. The separation between the big toe and smaller toes is pretty shallow, it only goes down a couple of inches. I have long toes so it's a little awkward for me, but not a deal breaker. The sock material is very soft and easy to wear. I tried wearing the socks with a regular pair of shoes and they were comfortable, though my other shoes pulled the back down and I had to yank them back up a few times in a short (2-3 minute) walk. They wear much better with the Tabis.
Love these socks -ordering more!
Very comfy, would buy again