Firmness

• Soft (1)
• Medium Soft (2)
• Medium (3)
• Medium Firm (2)
• Firm (2)

Material

• X-Foam (3)
• X-Foam + High carbon steel independent spring (4)
• X-Foam + Octaspring Honeycomb Spring (2)

Maintenance period

• 10 years maintenance (3)
• 20 years maintenance (6)

Thickness

• 9" or above (9)

Customize the size

• Yes (8)
• No (1)