The sofa is made of pure foam and requires a 72-hour recovery period. Afterward, please arrange the details according to the instructions. Piano-key-like backrest design:The backrest draws inspiration from the arrangement of piano keys, yet its lines are softer, enhancing the sofa's design aesthetic. Rounded armrests:The armrests feature a smooth, curved design, lending the sofa a premium, stylish aesthetic. Checkered seat surface:Break free from rigid design constraints. The checkered cushion surface complements the rounded piano-key armrests and backrest, while fluid, full lines lend the sofa richer dimensionality.