<Secret 1 for a more comfortable sleep...The comfort of coil springs>
What is a coil spring?
This spring is often used in bed mattresses. By using this spring material, we have achieved a sleeping comfort that feels just like sleeping in a bed. Coil springs have a strong spring resilience, so your lower back does not sink in as much, allowing you to sleep comfortably until morning.
The seat is fitted with plenty of coil springs, making it a sturdy bed.
Seating comfort...
The seat and back are springy, giving a bouncy feel and a firm, resilient backrest, making the chair very comfortable to sit on.

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Covering floor sofa bed for snoozing, low type, 2P
Corner couch sofa 3P
Low-resilience corner reclining sofa 3P
Floor corner sofa 1P+2P+corner
Compact sofa 2P
Couch sofa bed 3.5P
Coil spring sofa bed 3.5P