a. The sofa (Dark Grey) with adjusted backrest angle function. The backrest tilts back can reach 110-115° for comfortable and healthy sitting. The product made of top material, exquisite materials, fine workmanship. The chair and ottoman with storage function, and the middle seat can be sofa bed in extendable, which can save space and adopt to all kind of placed. Single Color design, strong sense of elegance, clean style with quite atmosphere feeling