While both are foam-based, regular polyfoam and memory foam have distinct characteristics that affect sleep experience.
Regular polyfoam (poly-foam) is more responsive and bouncy. It returns to shape quickly and sleeps cooler than memory foam.
Memory foam, also called viscoelastic foam, responds slowly to pressure and heat. It molds to your body shape for excellent pressure relief.
Memory foam excels at motion isolation, making it ideal for couples. Polyfoam transfers more motion.
Cost-wise, polyfoam is generally less expensive. However, high-quality memory foam offers superior durability.
The term 'foam mattress' is often used loosely, but there are critical differences between polyurethane foam (polyfoam) and viscoelastic foam (memory foam). Understanding these differences prevents expensive purchasing mistakes.
Polyfoam is the more responsive option — it bounces back immediately when you change positions, making it better for combination sleepers. Memory foam's slow response can feel 'stuck' during position changes, particularly for heavier individuals.
For durability, higher-density memory foam (4+ lb/ft³) outlasts polyfoam by 3-5 years on average. However, budget memory foam (under 3 lb/ft³) may actually wear faster than quality polyfoam. Always check density specifications, not just the 'memory foam' label.