Compressed sponge mattress 3.5ft.

compressed sponge mattress is to spin the sponge into small pieces and pressed into lumps by a high-pressure compressor through drying process before being cut to the size of the desired mattress. The advantage is that the compressed sponge is firm. not limp like a spring bed. Suitable for people with back pain. And still durable, can be used for 10 years or more. With reasonable price, It can be considered the most valuable mattress at this time. With a more affordable price than a latex mattress and less smell