Meet the Zinus Spa Sensations 10 inch Charcoal and Copper Hybrid Memory Foam and Spring Mattress, Adult, King. This mattress is made to help you sleep better with the right mix of comfort and smart design. It includes cooling graphite and copper gel memory foam to pull heat away and keep you at the right temperature all night. The copper also helps keep your bed fresh by fighting bacteria. Inside, iCoil technology and wrapped coils cut down on motion, so you can sleep without being disturbed. Strong edge support gives the mattress a firm, stable feel from side to side.