These are the best boot socks that I’ve ever used. Snug and supportive through the arch, but not constrictive or tight. Fit solid through heel and toe box but not super tight, but tight enough that there is no rub, no sock related chafing, blisters. Medium thickness that, depending on your boot fit, you could easily add a sock liner on a cold day or even a second, lightweight sock. Seams don’t cause problems either!Wash up real nice too!