You need to remove the cover from the product and find the hidden zipper on one side. Start walking on the mattress in concentric circles for 30 minutes on a regular basis. Rotate the mattress from head to toe after 1 month and then again after the next 1 month.Memory foam or material similar to that is used to make bedding products like pillows and mattresses. The warmth of your body that the item would take for 7-8 hours on a regular basis would help to breaking the cells quickly. It generally takes quite a few months to do that however with special techniques one can speed up the process. This cover is used to protect the mattress, but it also restricts the heat from entering into it and to open up the cells. Safely keep the cover, as you would need to use it again when the cells are completely broken. This material has a special quality to take the form of your body while you sleep. You can follow this process earlier if you feel that one of the sides has broken in while the other is still stiff. Hence, in order to make these cells open up one needs to break in the memory foam mattress. Do this for the first seven days, with this rising and fall the cell breaking process will speed up. polymethacrylimide Start sleeping on the foam mattress even if it uncomfortable due to the stiffness. These processes would let you make the item do the work what it is meant to do, which is to contour with the shape of your body. It is ideal for avoiding pressure points that everybody feels on a normal mattress. It should be noted that when this is manufactured, the cells of the foam are not fully opened.