What is the density and ILD of your comfort layers (foam)?

Foam Density is the mass of a foam's material within a cubic foot. Foam Density is connected to the quality and durability of foam.

Indention Load Deflection (ILD) is an industry standard of measurement to determine a foam's given firmness. Weight is applied to the surface of a foam piece. The more weight needed to depress the foam, the higher the ILD number and firmness of the foam.

Our smart bed comfort layers vary in density and ILD. Here's the current breakdown for our comfort layers. The first number is the density and the second number is the ILD:

• Gel-Infused Visco Elastic Foam: 3.5/5
• Copper-Infused Energex Foam: 3.0/14
• Polyurethane Foam: 1.8/28
• Comfort Support Foam: 1.8/80

Let's take a look at the Polyurethane foam example 1.8/28 above

1.8 is the density

Foam with high weight per cubic foot, high-density foam has a strong cell structure, which makes the material highly durable and long-lasting. ... In reality, HD foams can feel as soft or as firm as manufacturers wish to make them. Density indicates quality and durability rather than comfort level. The higher the number, the denser the foam. We use a 3.5 lb. because of it’s feel and it gives better compression.

28 is the ILD

ILD is measured by pressing a 12-inch round disk into a 4-inch piece of foam until it presses 25% or one inch into the mattress surface. The amount of weight or pressure required to compress the mattress to that extent is the ILD. ILD is sometimes referred to by the alternate name IFD, or Impression Force Deflection

ILD Value Breakdown

• 10 ILD is very soft
• 18 ILD is very soft
• 24 ILD is medium soft
• 28 ILD is medium
• 33 ILD is medium firm
• 44 ILD is firm
• 50 ILD is very firm
• 80+ ILD is super firm