If your mattress is worn out and has lumps or hollows, it will cause the memory foam overlay to eventually also conform to these lumps and hollows. So for best results, the overlay should be used on a mattress that is in a good condition.
Memory foam retains body heat better than other mattresses, however, it uses open celled polymers that are breathable therefore allowing air to move freely through the mattress helping to reduce the heating effect.
A memory foam overlay will make a difference to pretty much most mattresses, spring or other. Whilst our existing mattress can provide excellent support, an overlay can help with providing additional comfort and pressure relief as it responds to your body heat and conforms to the shape of your body.
Memory foam is undoubtedly one of the healthiest sleeping surfaces on the market today. It’s pressure relieving capability helps to improve general sleep quality, improves blood circulation, alleviates back pain and is also hyper allergenic and dust mite resistant.