A "Walking Foot" is a specialized sewing machine attachment designed to help feed multiple layers of fabric evenly through the machine. It features a set of feed dogs on the top that work in conjunction with the machine's lower feed dogs, ensuring that all layers move together without slipping. This is particularly useful for quilting, sewing thick fabrics, or working with slippery materials like silk. Using a walking foot can improve the quality of your sewing projects by preventing puckering and uneven seams. It is especially beneficial for tasks that require precision, such as matching patterns or sewing binding on quilts. Many sewing machines are compatible with walking feet, making them a popular choice among both beginners and experienced sewists.