Pocket spring systems form the system in which the steel springs, which are softer and more flexible, are placed in small packages and used in the mattress. In this system, the packages are more ergonomic than the spring bearings because they provide independent springing. In addition, extra strength and flexibility are provided by using different types of pocket springs for different points of the body such as waist, neck, back and hip. It should be known that concepts such as soft orthopedic, semi-orthopedic and full orthopedic which are frequently encountered in spring mattresses, are in fact pointing to their durability rather than the ergonomics of the mattress and also that hard mattresses do not mean orthopedic mattresses. IZDAS pocket spring mattresses offer different ergonomics compared to spring mattresses because they apply different pressures to different parts of the body.