The luxury quilted top layer of the Fusion range can be easily removed via a premium-quality zip. The soft-feel cover is machine washable for the ultimate in mattress hygiene. It offers a simple & speedy way to rejuvenate your 4G-infused mattress. Breathable 4G Foam Komfi’s innovative 4G foam incorporates ‘open cell’ technology for a superior sleep experience. Superconductive 4G expertly cools & ventilates from head to toe, delivering the optimal sleep temperature without compromising on support. Supportive Memory Foam High density viscoelastic memory foam conforms to the body’s shape, providing support whilst simultaneously reducing pressure & body heat. Returning to its original shape after each use, it banishes the dips & sags associated with traditional mattresses. Superior Comfort The fourth & final layer of the Fusion offers superior support for those who favour a medium-to-firm sleeping experience. The castellated base layer utilises precision cut air channels to promote ventilation & cooling.