futon — Japanese bedding typically consisting of a mattress (shikibuton) and a duvet/cover (kakebuton)
冬は厚い布団を使うとよく眠れる。
Using a thick futon in winter helps you sleep well.
毎朝布団をたたんで押入れにしまう習慣がある。
There's a habit of folding the futon every morning and putting it in the closet.
旅行先の民宿で昔ながらの布団で寝た。
I slept on a traditional futon at a guesthouse during my trip.
a round cushion used for Zen meditation (traditionally made from woven material) — used as a zafu or meditation cushion
座禅のときは、布団（座蒲団）に座って姿勢を正す。
During zazen, one sits on a futon (zafu) cushion and corrects one's posture.