This modular compressed sofa requires zero assembly upon arrival. Simply remove the outer packaging film and let the product stand for several hours for the built-in high-density sponge to fully rebound, then the sofa is ready for placement and daily use right away. The whole set consists of four separate individual cube modules with pre-sewn and pre-installed outer fabric covers at the factory. Customers do not need to assemble or match sofa covers manually, which saves lots of troublesome installation work. Filled with supportive high-density sponge, the cushion features moderate softness and firmness. Senior users will not sink excessively into soft padding or struggle to stand up due to insufficient support, delivering stable and comfortable sitting experience for long-time use.