Dining chair cushions are usually 1 to 3 inches thick, so the foam has to work hard in a small space. The thinner the cushion, the firmer the foam should be. Density (lb/ftÂł) drives how long the foam lasts, and firmness is rated by ILD (Indentation Load Deflection). The higher the ILD number, the firmer the cushion.
Foam by Cushion Thickness
Our traditional indoor foams are open-cell polyurethane, free of fire-retardant chemicals. Use your cushion’s thickness to find a starting point:
| Cushion thickness | Suggested starting foam |
| 1 to 1.5 in | V54 EverFlex (extra-firm) |
| 2 in | V44 or V54 EverFlex (firm to extra-firm) |
| 2.5 to 3 in | V44 EverFlex (firm) |
A cushion that’s too soft or too thin lets you sink through to the hard seat below. For dining room chairs that get everyday use, we recommend our premium EverFlex line for durability. EconoFlex works well for chairs that are used less often.
Memory Foam Chair Cushions
Memory foam contours slowly to your body. On a dining chair, it works best as a thin top layer over a firmer base, so the cushion still feels supportive through a long meal.
Organic Latex Chair Cushions
GOLS-certified organic latex is naturally breathable and resilient. Medium-firm N36 or firmest N45 suits most dining chair cushions.