Bedclothes or bedding: items used for sleeping, such as futons, pillows, sheets, and blankets.
季節に合わせて寝具を冬物に替えた。
I changed the bedding to winter items according to the season.
ホテルの寝具は清潔で快適だった。
The hotel's bedding was clean and comfortable.
寝具は定期的に洗濯したほうがいい。
You should wash bedding regularly.