Will heavy cushion ski socks make my feet too sweaty?

They can, especially in moderate temperatures or during high-intensity skiing. The thick construction retains more heat and moisture than thinner options. However, if you choose a merino or merino-blend heavy cushion sock, the wool's natural moisture management will help wick sweat away from your skin. The key is to reserve heavy cushion socks for genuinely cold conditions where the warmth is needed—if temperatures are above 25°F (-4°C), you may be better served by a medium cushion sock.