European Union quality certification，6m fame edgye peatetin patent High quality shown in details，Mattress High Density Sponge Medium-Firm Feel material description 1.Cashmere fabric 2.Thailand latex 3.Skin-friendly cotton 4.Anti-mite layer 5.High manganese steel spring 6.Support layer 7.Foam layer 8.3D material This Mattress Relatively soft type (about 21cm thick) Feature: Foam mattress and spring mattress are both commonly used in modern life. This mattress is equiped with foam and spring.