While firmness does play a part in how much support and comfort you get from a mattress, the Dormeo approach is slightly different. They�ve focused on creating a reactive foam mattress that works with your body, supporting it to create a �neutral spine� position that eliminates pressure points along your back and at the hips and shoulders. The memory foam and Octaspring� foam springs adapt and mould themselves to your body, whether you sleep on your back, your sides, or your front.This mattress is a single-sided design, so there�s no need to flip and turn it every six months. However, we do recommend that you rotate it from top to bottom every few months to prevent dips forming. To make this easier, you�ll find hidden handles underneath, so rotating takes seconds! The mattress comes with a five-year guarantee and additional 15-year manufacturer�s warranty for complete peace of mind.Dormeo Octaspring� springs are clever little things � not only do they eliminate pressure points by adapting to your body shape, but they immediately bounce back and adjust to the amount of pressure exerted. Different density Octaspring� foam springs provide different levels of support in a zone matrix that gives a firmer feel where it�s needed and a softer feel elsewhere. The honeycomb structure also allows air to flow freely through the mattress all night long for a cooler, fresher environment.Most mattress covers don�t come off � but the Dormeo Octaspring� 6500 one does! Made from super-soft Superstretch material that�s up to 50% stretchier than other covers (so it�s easier to get on and off), simply unzip it, take it off, and pop it in the washing machine at 30� whenever you want to freshen it up!Dormeo has included a host of new materials in the construction of the Octaspring� 6500, including the use of Ecocell foam that�s breathable and designed to be permanently elastic. The 3D cell structure holds its shape regardless of how many times it compresses, so it always bounces back better than ever!