A “trundle” is a pullout bed that can be fitted under a normal bed to make for additional sleeping arrangements.
The earliest historical reference of bunk bed occurs in Egypt, where the Pharaohs arranged for such beds to house their slave workers.
Bunk beds are a hugely popular form of bedding for children sharing the same room.
In October 1999, the CPSC made it a law that infants should not sleep with their parents due to the risks of strangulation, suffocation and death caused by overlying.