mattress stores near me cheap in trichy growell beds and furnitures trichy a 6-inch memory foam mattress typically refers to a mattress composed primarily of memory foam with a thickness of 6 inches. Memory foam mattresses are known for their contouring properties, as they mold to the shape of the body, providing support and comfort.Memory foam mattresses are made from viscoelastic foam, a type of polyurethane foam that responds to body heat and pressure, conforming to the shape of the sleeper's body