Firmness

• Medium Firm (4)
• Firm (7)

Material

• X-Foam (6)
• X-Foam + High carbon steel independent spring (1)

Maintenance period

• 5 years maintenance (2)
• 10 years maintenance (4)
• 20 years maintenance (1)

Thickness

• 4" or below (1)
• 5”–8.75” (12)
• 9" or above (2)

Customize the size

• Yes (7)