Ilford RotaTrim Self-Healing Cutting Mat A3 450mm x 300mm

What is a Self- Healing Cutting Mat?
A self-healing cutting mat is made from tiny pieces of material which are pressed together to create a solid cutting surface.   When cut into with a rotary cutter, blade or knife the blade goes between the tiny pieces, separating them but not cutting into the surface as a whole.  

Benefits of Self-Healing Cutting Mats
The benefits of a self-healing cutting mat are really within the name. No matter the blade you are using or how many cuts you make the mat will bind back together again leaving you with a smooth cutting surface.