Memory foam consists of low-resistance, or viscoelastic polyurethane, and several other chemicals, such as hydrocarbons. Medicine ball sinking into Nectar Premiere’s memory foam Compared to polyurethane foam, this material is denser and more temperature-sensitive. Generally, it becomes softer and sinks more in response to body heat. . 825 393 875 392 47 523 606 517

what is memory foam made of