Marks Mattress Outlet in Southport, Indiana, is dedicated to improving your sleep quality with affordable, top-brand mattresses. As the exclusive provider of the Sleep Natural Nightingale mattress, made from organic latex, we offer exceptional comfort at unbeatable prices. Our inventory includes sizes Twin-California King. Explore affordable alternatives to Sleep Number and Tempur-Pedic, including memory foam, hybrids, and adjustable bases. Serving Southport, Greenwood, Beech Grove, and beyond.