I bought these socks to wear with Keds and Vans, and they're perfect. Unlike many no-show socks I've worn, they come up higher on the top of the foot so no annoying slipping off and bunching around the toes. There's also a small silicone tag on the heel that keeps them from falling down in the back. The socks are not visible while wearing sneakers or loafers, but they would be visible with a ballet flat.

The material is soft and stretchy. I wear a 6.5-7 and they well. My mom borrowed a pair, and they fit her size 8.5 feet as well.