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Japanese futons present a natural and sustainable answer to many problems associated with contemporary mattresses. For one, they are made from organic materials, such as cotton, which ensures that they are free from toxic chemicals and naturally flame resistant. Their composition grants the perfect firmness required for proper spinal alignment during sleep.
Typically, a shiki butan is three to six inches thick and offers adequate support without compromising comfort. By sleeping on a firmer surface, the futon helps maintain proper alignment for the back while providing just the right amount of cushioning to prevent excessive sagging. This design offers a balance that many find beneficial for alleviating back pain and ensuring quality sleep.