The basis of such mattresses can be spring.

The orthopedic mattress itself consists of four layers — this is the base, the second layer is an insulator, and then there is a soft layer, as well as a cover. Each layer should be of high quality, very large requirements are imposed on it, and there are several types of mattresses. The basis of such mattresses can be spring. Non -free mattresses have the base of coconut chips or natural latex. Although this mattress itself is hard, but it is very convenient to sleep on it. The spring mattress is considered a “classic” option.