To obtain a drying-preventive sock capable of enhancing wetness preservability of a foot and giving excellent wearing feeling.

This sock has a rubber layer on a heel or a toe part brought into contact with a rear part of a foot in the sock. A wetness preservability the heel or the toe is enhanced by the action of the rubber layer to prevent keratinization of the skin in the dry season. The sock and the rubber layer are made in one body and give excellent wearing feeling and high durability.