The modern sleeper sofa is the ideal space saver when in need of an all-in-one comfortable seating and sleeping arrangement. As a comfortable and multifaceted furnishing, the sleeper sofa comes in many sizes, shapes, and colors. While shopping for a sofa, the options may seem slim. Still, the reality is that there are various characteristics to choose from to complement mid-century, modern, traditional, and contemporary spaces. There are two central functions to consider when shopping for a sleeper sofa; the fold-down mattress and the pullout mattress. Your availability of space is the ultimate deciding factor of which function you will need.