Non-self-healing. I don't think this is a very high quality cutting mat. This is my first time using it and there are already permanent marks and raised cuts on its surface. I would come back if it wasn't so painful during quarantine. I would take the Olfa carpet. I used one in design school and it actually met the "self-healing" requirement and lasted forever. This one is cute, with fun colors and all, but not the quality you want.
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