Jin Keer mattress is designed according to ergonomics. The partitioned mattress is moderately soft and hard, which can fit the natural physiological curvature of the spine and evenly distribute the body pressure. The soft shoulder area makes the shoulders feel looser when sleeping, while the solid central area provides effective support for the waist and buttocks. UERT elastic sponge is a kind of porous permeable sponge. It has a completely open cell structure and is connected with each other through three-dimensional connection, so it has excellent air permeability. Suitable for the elderly.