Memory Foam Explained


The DFI Sales teams have been asked on a number of occasions about the benefits of Memory Foam in our mattresses so below is a little background information on  Memory Foam and the type Memory Foam we insist goes into all DFI  mattresses.  

Memory foam works by becoming soft enough to mould around a person or body shape. This happens when the high-density, low-resilience polyurethane foam reacts to body heat. When the pressure is removed, it returns to its original shape. Invented by NASA in 1966 to improve the safety of aircraft cushions, memory foam is now widely used in a variety of commercial application, memory foam has a  varied number of commercial and medical applications, including cushioning for shoes, prosthetics and seating pads for wheelchairs. But the most famous application is in pillows and mattresses, where its softness and responsiveness make it ideal for sleeping. Memory foam is a mouldable material that also responds to temperature and weight and has hypo-allergenic properties. This means it will mould to the shape of your body, absorb your weight and relieve pressure on your joints. Not everyone likes the sinking motion of this type of mattress, and it can get rather warm, but it’s ideal for those who need support or suffers from a bad back, as it will maintain posture and align your spine horizontally when sleeping on your side.

Memory foam comes in a variety of different densities. The higher the density, the firmer, more supportive and (usually) more expensive the mattress.

Density is measured in kilograms per cubic metre, although it's often expressed simply as, for example, "45kg": this means a cubic metre of the foam weighs 45 kilograms. Lower-density mattresses tend to lose their shape and elasticity more quickly, while higher densities will offer more support. Heavier people, or people with back and joint problems, will be better served by higher densities of memory foam.

One of the biggest complaints about memory foam mattresses historically is the amount of heat they can produce. This is because lots of models have been designed so they react to your body temperature. When this happens, the material softens which is why you get such great support from them. In fact, you could say it’s a little like sleeping on air.

DFI Beds have listened to their customers, and all the memory foam used in our beds is an open cell structure also described as air cool memory foam. If you opt for a DFI mattress that includes this technology, it will respond to your body temperature much quicker and will channel the warmth out. This eliminates the issue with additional heat and makes for a cooler night’s sleep.

Remember that DFI continues to supply beds all over Ireland of which offer a  Free Delivery and an interest-free payment option.  We currently operate a daily delivery service to Dublin and on alternate days to Cork, Limerick, Kerry, Galway and Waterford. Please take time to read some of our customer reviews on interactions with our delivery staff. Currently, DFI is prioritising the delivery of beds and mattresses for front line workers and those in greatest need. We also have a discount offer available on the DFI website for those customers to whom we owe so much.