This model has the most comfortable spring package: The Quattro-Pocket. On top of the comfortable box spring is a mattress with a double spring package. An x-pocket topped with extra-high pocket springs. Then there is the ZIPTOP topper with 100% Talalay latex filling with a "built-in" soft-touch pocket on the underside. This intelligent mini-pocket provides even better point elasticity with lasting resilience. Some box springs you have to feel or really believe. The shoulder sinks flawlessly into the special shoulder zone. The lower back receives maximum support so that back pain really disappears.