The blended padding of the present disclosure includes a polyester fiber and a water-repellent regenerated cellulose fiber treated in a specific manner. The water-repellent regenerated cellulose fiber contains, for example, a water-repellent rayon, and the polyester fiber contains, for example, at least one fiber selected from the group consisting of a polyethylene terephthalate (PET) fiber, a polytrimethylene terephthalate (PTT) fiber, a polybutylene terephthalate (PBT) fiber, a polyethylene naphthalate (PEN) fiber, a polylactic acid (PLA) fiber, a polycaprolactone (PCL) fiber, and a polybutylene succinate (PBS) fiber.