What does density rating mean for memory foam?
All About Foam: Latex Foam, Memory Foam, PolyurethaneWeight densities of memory foamMemory foam is a material that can be manufactured in varying qualities, often marked by its density. Density is a measure in weight for memory foam, usually ranging from 2lb to 5lb. A 2lb or lower density rating is considered low quality, and this will be the type of memory foam that is found in a main stream retail store like Walmart, Target or Bed, Bath and Beyond.