The Premier Hybrid is a customizable hybrid mattress from DLX, a family-run business that has been making mattresses for over 100 years. It features a zippered cover with an interchangeable 3" comfort layer that allows you to choose your firmness and change it later if needed. Its construction combines high-density foams with a pocket spring support core and reinforced edge support. It is made to order in New York and shipped directly to your doorstep in a compact box.