Refers to a type of thick sock, often used in colder climates.
En invierno, me gusta usar calcetones gruesos para mantener mis pies calientes.
In winter, I like to wear thick socks to keep my feet warm.
En invierno, siempre uso calcetones gruesos para mantener mis pies calentitos.
In winter, I always wear thick socks to keep my feet warm.