1. Fabric: 22#+3 cm cotton +1000 spray + cotton: unparalleled strength, scratch resistance, high toughness, good feel, light and soft, strong wrapping.

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

3. Spring: 30 rows of high-carbon steel silent spring: strong pressure resistance and never deformation, super support, overall comfort.

4. Bottom: 20#+1 cm cotton: good air permeability, good respiratory circulation effect.

5. Perimeter: 20#+1 cm cotton +4 handle: clear stripes, beautiful and generous, strong permeability, easy to move.