Combined orthopedic mattress. It is two mattresses in one with the possibility to change the mattress prison by simply turning him to the other side. The base of the mattress consists of a "Bonnell" spring block, a particularly strong coconut board covered with perforated latex on one side and a hard coconut fiber board. Coconut fiber provides rigidity and orthopedic hardness. Meets all orthopedic requirements. Winter-Summer.