Your feet take a lot of abuse from all the pounding, stomping, kicking and leaping you do. It is a fact that if you are on the move, your feet are too. This means they get hot. This means they get sweaty. All that extra moisture can cause some nasty blisters. Cotton socks stay wet, so you need socks made out of merino wool, which wicks. The wool pulls moisture away from your skin, keeping your feet dry and comfy.
Here are some of my favorites made by Darn Tough and Smartwool. You can choose the amount of thickness and cushion you need, and the height of sock. All the pairs come in some wonderful colors too, many more than the ones shown here.