Latex, foam, and spring core
There is no right answer to the question, "Which material is best for the mattress core?" In the premium quality segment – which includes Röwa's products – you can ergonomically lie comfortably with any material. The differences are mainly important for your personal lying sensation.
Latex
The basic material in latex is milk from rubber trees. To achieve stability of form and durability, natural latex is mixed with varied amounts of synthetic latex, foamed, and "baked" in a form. Latex is relatively heavy, but provides the greatest degree of high-precision elasticity and body-hugging comfort.
Foam
High-quality, high-resilient foam such as the AirCon Plus® foam used at Röwa is developed into block form from synthetic materials in an environmentally-friendly procedure. The foam is then intricately cut into a form that functions ergonomically. The foam's adjustment to the body is comparable to that of latex, but it is not so "cozy". However, it is lighter and more dynamic, with gentle give above and firm support below.
Thanks to their bending elasticity and low height, latex and foam mattresses are excellently suitable for adjustable slatted frames.
Spring core
Pocket spring core mattresses are packed with several hundred barrel-shaped springs, and each is individually tucked into a canvas pocket and connected in a way that allows movement. This enables very precise body adjustment.
Overlays made of latex or foam make the surface hug the body more. Pocket spring core mattresses are higher in comparison, but also achieve better aeration.
Although most pocket spring core systems are not as well-suited to slatted frames, the Etera system offers an extraordinary solution. Simple spring cores (not pocket spring cores) would not be able to meet the current ergonomic requirements of Röwa's brand standard.