The self-healing mat is a scrapbook tool that is often overlooked. Experienced scrapbookers know that this little mat is a must-have for your scrapbooking cutting and cropping needs. The self-healing mat is a protector and ruler. Use the mat in conjunction with cutting blades. The ruled lines on the mat help measure accurately and cut straight lines if needed. The self-healing aspect eliminates divots and creases to provide a smooth cutting surface every time. If you do a lot of scrapbooking, the self-healing mat is a wonderful item to add to your scrapbooking tool kit.