The upper part of the product is lint-free fabric with a velvety texture. Thickness: 7-8mm. Upper surface: 150gr/m2 velvety shiny fabric. Middle section: 4mm 26 density sponge filled. The lower surface does not cause odor. At the same time, its lower surface has hygienic and non-slip sole features. Our dod sole productions oeko-Tex® | It complies with standard 100 standards, is MSDS reported, and the highest quality paints are used. Instructions for use: It can be washed in the washing machine at 30° without spinning. It does not contain substances harmful to nature and human health. It does not contain carcinogenic substances. It does not cause dust and does not leave lint. It can be used in 4 seasons. It is antibacterial and antiallergic. It has thermal insulation feature. It does not retain dust and stains. It is easy to clean. If it gets dirty, you can clean it immediately with liquid soap or aspirin and a damp cloth. It is not ironed.