Sleep Layer Of Cool Blue Open Cell Breathable & Cooling Memory Foam Provides Both Pressure Relief Without The Heat Generation Of Standard Memory Foams For A Cooler More Comfortable Night’s Sleep. The High Density Eco Foam Bottom Layer Creates A Superb Support Base Which Provides Great Sleeper Support & Is Formed From Offcuts Produced In The Manufacturing Process Which Would Otherwise Have Been Destined For Landfill. The Cover Is Upholstered With A Luxurious Breathable and hypo-allergenic Fabric Which Helps Reduce The Symptoms Of Asthma And Allergies. The Cover Is Constructed With A Zip Fastener Design To Allow It To Be Easily Removed For Cleaning In Standard Domestic Washing Machines. This Provides For A Longer Lifespan Than Traditional Taped Mattresses Whose Covers Are Fixed. The Mattress Is Supplied Vacuum-packed, And Bagged For Easy Delivery, Transportation To Your Chosen Bedroom, and unwrapping. Once Unpacked The UK Manufactured Mattress Should Be Laid Flat For 4-6 Hours Prior To Use To Allow It To Expand To Its Full Size.