Sofa Cushioning & Fill
Fill is the deciding factor for how soft or firm the sofa feels. Most sofas use foam as the main fill material. If you like a soft, sink-in kind of sofa, select a foam with lower density. If you want the sofa to be firm and provide good support, go for higher density foam.
The foam is usually supported by different types of springs and elastic belts.
• High Resilience (HR) Foam: Excellent foam for Sofas which offer resilient yet strong support. Available in various densities from Very soft to firm
• Polyurethane (PU) Foam: PU foam has a broad range of load-bearing capability and resiliency. Multiple layers of foam can provide suitable firmness.