Functional and aesthetic, daybeds are often the perfect solution to add just that little something to impact the design of almost any room. Daybeds are twin size and can suit any height mattress.
Daybeds which allow for an additional twin size mattress stored underneath are called Trundle systems. Generally, a trundle system can be used with any Daybed, and some of them can “Pop Up” to a greater height that in effect provides a larger sleeping surface. (The equivalent to a king size mattress width, two twins laid side by side.)
When choosing a twin mattress for a trundle cavity, please be careful to limit the height of that mattress to approximately 6 (six) inches, otherwise it may be difficult to store the Trundle system under the daybed.