High Density Foam

High density foam is a very firm foam that generally makes up the bottom layer of popular memory foam mattresses. Other types of mattresses such as innerspring or hybrid may also use high density foam to support the spring systems.

High density foams generally are not used to create the entire mattress because they are just too firm. So, generally they are used as a foundation for the bed or to provide edge support.

High density foam is made of a blend of polyurethane and has a tendency to off-gas. If you are susceptible to lung issues, please do additional research on the quality of foams before purchasing.

Pros: Structural firm foam used by many mattresses to provide foundation and shape.

Cons: Off-gassing problems with lower quality foams and it is too firm to make a mattress in its entirety.

Open Coil

Open coil mattresses are also called traditional innerspring mattresses. They have interconnected coils in a metal mesh that provide even support across the mattress surface.

Many open coil systems use hour glass shaped springs in their interconnected systems so that the evenness is distributed from the top to bottom.

Though this system is good at providing even support, there are complaints of aggravated pressure points and discomfort with open coil systems.

Pros: Durable materials and traditional even feel.

Cons: Pressure point discomfort and motion transfer issues.

Material Scores

Overall Score:
High Density Foam: 8.9/10
Open Coil: 8.7/10

Comfort:
High Density Foam: 8/10
Open Coil: 8.7/10

Softness:
High Density Foam: 7.5/10
Open Coil: 8.4/10

Cooling:
High Density Foam: 8/10
Open Coil: 9.5/10

Hypoallergenic:
High Density Foam: 8.1/10
Open Coil: 9.4/10

Odor:
High Density Foam: 8.4/10
Open Coil: 9.4/10

General Support:
High Density Foam: 8/10
Open Coil: 9.5/10

Eco-Conscious:
High Density Foam: 8.5/10
Open Coil: 8.7/10

Price Value:
High Density Foam: 9.4/10
Open Coil: 9.5/10