A full size trundle bed was designed to make the most of compact spaces. With a bed on wheels that conveniently rolls in and out from under the bed, it has many uses. A full size bed with a twin trundle is popular for siblings sharing a room. In guest rooms, a full trundle bed frame provides more room for guest to stretch out for a good night's slumber. Teens like the dual function of a full size daybed with trundle. A kids full size trundle bed is also a great choice for small apartments and cramped dorm rooms - not just for kids rooms anymore.