Designers Thomas Müller and Jörg Wulff are the co-founders of Berlin-based Müller and Wulff, a design firm they started in 2001. The duo knows a few things about conceiving furniture that serves multiple purposes, developing a penchant for creating sleeper sofas that work overtime for those who are, well, working overtime. Their eminently versatile Tuck Sleeper Sofa (2013) serves as a comfortable sofa, sleep-satisfying bed and even as a group chaise thanks to its ability to be partially extended to a size that's in between sofa and bed. Quickly convert Tuck from sofa to sleeper simply by lifting up the seat and pulling it toward you. It comes fitted with narrow armrests to maximize the sitting and sleeping area. Made in Denmark.