1. Fabric: 20#+ 2.5cm cotton +1000 spray cotton + cotton: unparalleled strength, scratch resistance, high toughness, good feel, light and soft, strong wrapping.

2. Filling layer: 2cm green brown + three layers PK cotton (500g + 800g), cool and breathable, quiet and silent, elastic lasting unchanged, so that the body and mind can be relaxed, green environmental protection, good for health.

3. Spring: high carbon steel silent spring, strong pressure resistance and never deformation, super support, overall comfort.

4. Bottom: 20#+ 1.2cm cotton: Good respiratory circulation effect.

5. Perimeter: 16#+ 0.6cm cotton; Beautiful, good suction effect, strong air permeability.