The usefulness of a mattress underlay is purely technical and very specific. Its purpose is to insulate the mattress from its frame by creating an air vacuum which will allow heat and transpiration-induced humidity from sleepers to be properly evacuated. Thereby prolonging the life of your bedding.
The high-tech VICTORIA DRY underlay with 3D-fiber , thickness 10 mm, "honeycombed" structure
Thele VICTORIA MAT ecological underlay with latexed natural coconut fiber, density 70 kilos, thickness 15mm.
Note that only a minimum density of 70 kg/m3 garantees an underlay will be able to fulfill its role properly.
The extra-thin and anti-slip VICTORIA TEC underlay, thickness 15 mm.