Mattress, has bottom with lower layer made of foam material that has fine cell structure with high density, middle layer made of foam material that has strengthened webs and walls, and upper layer made of latex that has open cell structure

摘要

The mattress has a flexible bottom (2) and a fabric cover, where the flexible bottom includes lower, middle and upper layers (9, 10, 11) that are stuck with one another. The lower layer is made of a foam material that has a fine cell structure with high density. The middle layer is made of a foam material that has strengthened webs and completely open cell walls. The upper layer is made of latex that has an open cell structure. The thickness of the lower, middle and upper layers is about 53 percentage, 8 percentage, and 39 percentage of the total thickness of the bottom, respectively.