These socks rock. They stay up well, my son doesn't pull them off, they don't sag, they also are not too tight, they have grips on the bottom so he can run around the house without slipping. Overall, exactly what I was looking for. The colors do fade quickly and they get some pills on them when you was them, but I have washed them over and over and they haven't fallen apart in the months he has been wearing them. He outgrows them before they wear out!