Hi Spen55.
Energex is a high-quality polyfoam, one of the newer generation “high-performance polyfoams.” The foam is also more immediate in its response and not have the “hug” and “memory foam feel” quality that many people dislike. These high-performance polyfoams tend to be extremely durable and some of them are engineered to provide feels that are somewhat similar to latex, others similar to memory foam, and others simply versions unto themselves.
According to the manufacturer of Energex foam, it “bridges the gap between latex and memory foam by combining the superior pressure mapping of visco with the energetic feel of latex. It is ideally suited in bedding as a transition layer between the surface, which is comprised of memory foam and the base layer.”
I hope this helps!
NikkiTMU