An air bed is a type of mattress that can be inflated and deflated using air. It is typically made from durable materials like vinyl or nylon and is designed for comfort and portability. Air beds are popular for camping, temporary sleeping arrangements, or as guest beds because they can be easily stored and transported. Many air beds come with built-in pumps for quick inflation and deflation. They can be adjusted to different firmness levels by adding or releasing air, allowing users to customize their sleeping experience. Some models also feature additional layers for enhanced comfort, similar to traditional mattresses.