A self-inflating pad is a type of sleeping pad designed for camping and outdoor activities. It combines foam insulation with an air chamber, allowing it to expand and fill with air automatically when unrolled. This feature provides comfort and insulation from the ground, making it a popular choice for campers and backpackers. These pads are typically lightweight and compact, making them easy to carry. Many self-inflating pads also come with a valve that allows users to add or release air for personalized firmness. They are often used in conjunction with other camping gear, such as sleeping bags and tents.