I have long admired the Darn Tough Socks "Good Witch" sock, but knew that I needed a little more cushioning. They really don't have any, and that type of sock leaves my feet sliding around a little in their winter shoes. Enter the Phat Witch! Yay! Just enough cushioning, plus a height that is tall enough to stay above my short boots. I wear a 6.5-7 and went with a medium because that's where I ended up with another pair of DT socks (the small was a bit too small in those). In these, I think I could be happy in a small but will go ahead and stick with the mediums.