Spring mattresses are a type of bedding that uses a system of metal coils to provide support and comfort. These coils are designed to respond to body weight and movement, helping to distribute pressure evenly across the surface. The number and arrangement of coils can vary, affecting the mattress's firmness and durability. Typically, spring mattresses are covered with layers of padding, such as foam or fiber, to enhance comfort. They come in various styles, including innerspring, pocketed coil, and continuous coil designs. Many people choose spring mattresses for their affordability and wide range of options to suit different sleeping preferences.