PopUp Trundle by Michael Alan CSR Select
This Pop-Up Trundle is perfect for adding additional sleeping space with out taking up any room until bed time. You simply place a low profile twin mattress (not included) on this frame, and roll it under a bed (clearance must be greater than 6.25" plus the thickness of your mattress). When the mattress is needed simply roll it out and trip the trigger to pop it up to sleep on.