"Viva First" spring and memory foam mattress A viscoelastic foam Thanks to its viscoelastic foam, a memory foam mattress adapts easily and gradually to your slightest movements during the night, thanks to the heat released by your body. Pocket springs In addition, the 609 springs of this mattress are called pocket springs: each spring is individually wrapped in fabric. This process allows the springs to be independent of each other and pressure exerted in one will not be transmitted to the other. Sleeping independence This is very important for your comfort because these pocket springs will isolate the movements of the person sleeping with you. Optimal comfort Pleasant and highly adaptable, the memory foam spring mattress is designed to provide you with optimal support and comfort, all night long. It therefore accompanies your movements all night long and supports the parts of your body that need it most.