bedding; bedclothes
Refers to bedding items collectively, such as sheets, blankets, pillows, and futons.
新しい寝具類を買いそろえた。
I bought a new set of bedding.
ホテルの寝具類は清潔だった。
The hotel's bedding was clean.
Compound of 寝具 (しんぐ, 'bedding') + 類 (るい, 'type, category'). The exact historical derivation is uncertain, but the word is transparently formed from these components.