The Serta 3-in-1 Combo Bed gives you lots of versatility and comfort--allowing you to own one air bed that satisfies multiple uses. *Powerful external AC pump quickly and easily inflates and deflates airbed. *Multiple configurations for multiple uses: Raised twin makes it easy to get in and out of bed. Standard King for lots of room. Separate the beds and have two Twin beds. *28 circular coils on each Twin Bed create a comfortable sleeping surface. *Robust ladder lock straps hold beds securely together. *Binto style carry bag is included and makes it easy to roll up and store air bed. *Secure press-lock valves maintain pressure.