AL MANY JANSSEN HAS A CONSTRUCTION FROM CONNECTED CARBONIC SPRINGS. IN ADDITION, IT CONTAINS AN ISOLATED FELT TO PROTECT IT IN ADDITION TO A SPONGE LAYER. THE DOUBLE FACE CONSISTS FROM A SPONGE LAYER 25 KG DENSITY AND EACH LAYER IS 1.5 CM. IMPORTED FABRIC FEATURES WITH ANTI-BACTERIA AND AGAINST CIMEX LECTULARIUS. It is a chassis of separate springs made of reinforced steel To ensure that there is no drop in the mattress, in addition to that it is treated against rust In addition to the wire that connects the springs to each other in a certain way so as to ensure The zippers do not go outside the chassis, and the number of zippers is 130 per square meter The felt layer is a thermally pressed cotton that acts as an insulator between the zipper and the sponge layers So that there is no friction between the zipper and the layers above it, and it gives rigidity to the mattress And isolates the sound of the zipper. Foam layer 1.5 cm density 20 A layer of Janssen sponge 28 faces, a layer of cotton on each side Sponge 1 cm density 20 + Vaseline 20 grams It also has two sides for more convenience Double net fabric treated against bacteria and bed bugs Ventilation holes are located on both sides of the mattress and distributed in a thoughtful way to ensure Good and complete ventilation inside the mattress, leaving no room for unpleasant odors or mold inside the mattress.