The 4G Aircool Titan XL Memory Foam Mattress is the deepest mattress in our range (30cm) & is the best memory foam mattress for heavier sleepers wanting additional night-time support. Encourages Airflow Through the Mattress The top layer of 4G Aircool memory foam provides the ultimate in comfort & support, whilst ensuring that you don't get too hot during the night. The open-cell structure of 4G Aircool memory foam encourages air to flow through the mattress, wicking away excess heat & moisture naturally to create a fresh & hygienic sleeping environment. A Layer of Revo Technology Foam Beneath is a layer of Revo technology foam, which shares the cooling, open-cell structure, described above. This provides just the right amount of bounce in your mattress without the need for traditional pocket springs. Extra Deep Reflex Foam Base The extra-deep reflex foam base provides high levels of support & creates a durable & long-lasting mattress. The 4G Aircool Titan XL Memory Foam Mattress is delivered rolled up for your convenience & comes with a removable, machine washable mattress cover. Looking for even more comfort? Complete your set up with our range of memory foam mattress toppers.