A synthetic pillow is a type of pillow filled with man-made materials, such as polyester fibers or foam. These materials are designed to mimic the softness and support of natural fillings like down or feathers, but they are often more affordable and hypoallergenic. Synthetic pillows are popular for their durability and ease of care, as they can usually be machine washed. Many people choose synthetic pillows for their versatility, as they come in various shapes and sizes to suit different sleeping positions. Additionally, they are often resistant to dust mites and mold, making them a suitable option for those with allergies.