Try a Thurlow sock. Probably $10 - $12a pair. Very durable. They make an over the calf, nearly 100% cotton sock. The foot and tube do contain synthetic stretch fibers for fit and support. I have found these are excellent for my snake boot. And about as cool as you can expect. I hunt in SE Alabama. It can be 90F or hotter in early bow season.So I know "sweat" !!