This is a test of commonsense. Complete the next sentence:

How to buy a temporary bed
Consider buying an air mattress.
The air mattress (or " air bed ") is one of the most popular temporary bed solutions for all manner of applications, including camping, moving, and accommodating overnight guests. Benefits of air mattresses include their ability to be stowed away in a small space when not needed and their high level of insulation from cold ground temperatures.
Air mattresses must be inflated using a pump. Using a hand pump can be time consuming and tiring, while using an electric pump requires access to an electrical outlet.