The central core of Gold mattress is made of inter-connected springs with small opening diameters. The small diameter results in tolerance of heavy weights and long life of the mattress. The wire used in this model is high-carbon and its thickness is 2.2 mm. The number of springs is 299 in size 90, 414 in size 120, 552 in size 160 and 621 in size 180. This set of springs is fastened by a frame made of 4-mm wire. A sponge with the density of 25 kg/m³ strengthens the walls of the mattress to create more consistency and integrity in its structure. Since this mattress has two sides, both sides can be used. The double-pad side is firmer and the V-pad side gives a softer feeling. The cloth used in this mattress is RED Enjoy circular knit cloth resulting in breathing of the mattress and thus avoiding sweating. The height of this mattress is 35 cm (+3).