A self-inflating pillow is a portable and convenient sleeping accessory designed for comfort during travel or outdoor activities. It typically features an internal foam structure that expands when the valve is opened, allowing air to fill the pillow automatically. This eliminates the need for manual inflation, making it easy to use. These pillows are often made from lightweight, durable materials, making them ideal for camping, hiking, or backpacking. Many self-inflating pillows also come with a cover for added softness and can be rolled up for compact storage. They are a popular choice among outdoor enthusiasts and travelers seeking comfort on the go.