This complete mattress support system replaces the traditional bed frame & foundation with its 100% steel design. This foundation assembles in minutes and does not require the use of any tools for assembly. The foundation is sold by size, with corner covers, large feet, and a quilted cover that emulates a box spring. The included mesh cover is super soft 100% polyester, and machine washable for effortless care and maintenance. The product raises the bed 14” off the ground, providing additional under-bed storage space.