Will medium cushion socks make my feet sweat too much?

Not if you choose socks with merino wool content and targeted ventilation zones. Merino wool naturally regulates temperature and wicks moisture away from the skin, while ventilation zones on the top of the foot allow heat to escape. The cushioning itself creates air pockets that help with insulation and moisture movement. If you consistently experience sweaty feet, look for medium cushion models with extensive ventilation zones or consider light cushion instead.