Tight fit, heel balling is bad.
First of all, the sizing on these is absolutely insane. I have fairly average sized feet, I wear a 9.5 shoe. These things are a chore to get on they are so tight. Once they're on, the stitching around the toe is very pronounced and goes right across the front of your toes and overlaps on the side, which means you really feel it when your foot touches the sides of your shoe. Secondly, I don't believe the material listing is correct. I bought these as they are listed as being mostly synthetic which should prevent balling on the heel, a problem I've faced with non synthetic socks. One pair that I've worn a whopping 3 times already has significant balling on the heel. I bought these socks at the same time as some synthetic Adidas socks to see which were better, and the Adidas socks show no sign of balling on the heel. Would not buy again.
amazon reviews