The Serta iComfortECO F40HD Mattress, the next generation of the Serta iComfort mattress, delivers cool, sustainable sleep. Our queen size foam iComfort mattress is made with eco-friendly materials. As an upgraded model, it comes with HD memory foam that provides customized comfort. At the top of our 14.5" mattress, we have our CoolTemp fabric cover that is breathable and is made of plastic bottles. Below that is our plant based natural memory foam that adds pressure-relief to help alleviate your body's pressure points. Beneath that is the foam core and recycled fiber base, both of which add support to the mattress. The feel of the mattress is medium, perfect for all types of sleepers. Finally, our foam is CertiPUR-US certified, meaning that it is tested for and is free from harmful chemicals and gases. Browse eco-friendly mattresses with Serta. | Serta iComfortECO F40HD Queen Mattress - Foam | Medium