Discover common myths about mattresses!
TEXT FROM THE SHORT BALL SERIES, PART 3

What mattress should a couple of different weights use?

Weight does not matter when choosing a mattress. People of different weights should use the Osaka Air mattress, which provides excellent support for the bodies and spines of different individuals. This is because the weight distribution points are proportional to the body's surface on it. Therefore, this mattress is the ideal solution for a couple with different weights.

What is the best foam density in a mattress?

The best density for the first layer of a mattress is about 35 kg/m³. In the case of a good high-resilience mattress, it should have the parameter HR3520. This means it is a high-resilience foam with a density of 35 kg/m³, and the hardness is 2.0 kPa. The foam density in a mattress indicates its longevity and should not be too low. However, if it is too high, it can disturb the foam dynamics. Therefore, densities between 30 kg/m³ and 45 kg/m³ are considered most optimal for high-resilience open-cell foams.

How to check the foam density in a mattress?

The foam density in a mattress indicates how many kilograms of a particular type of foam are present in one cubic meter of foam block. It is one of the elements of the complete parameters of polyurethane foams. The complete parameter consists of a letter designation (V, T, or HR), followed by a sequence of four digits, where the first two represent the density in kg/m? and the next two represent the hardness in kPa. A five-digit sequence is also allowed when hardness is specified in N. The letter designations are expanded as follows: V stands for viscoelastic foam, HR stands for high-resilience foam, and T stands for traditional foam with closed cells. You should always demand the full foam parameters from sellers because each element is of great importance.

What is the difference between HR35 foam and T35 foam in a mattress?

HR35 foam is high-resilience foam with an open cell structure and a density of 35 kg/m?. In contrast, T35 foam is upholstery foam with a closed cell structure, also with a density of 35 kg/m?. In both cases, the foam hardness parameter is missing, which is specified in N or kPa. The differences between them are substantial because open-cell foam provides dynamism and greater longevity. Closed-cell foams like T35 tend to deform quickly and are less elastic. If you have the option, you should always prefer HR foams.

What does PU or PUR foam mean in a mattress?

PU foam, also known as PUR, is common polyurethane foam. It can consist of all three available types of foams used in mattress production, namely T foam (traditional), V foam (viscoelastic), and HR foam (high-resilience). Depending on the type, density, and hardness of the foam, the mattress can be more or less elastic and provide better or worse spinal support.