Solid Green Self-Healing Cutting Mat - Protect your desk or work table from sharp blades, writing instruments and other art and craft tools. Cut paper, film, textiles and more. The cutting mats resilient surface heals so completely that cutting leaves no visible trace. The mat will not break down with repeated use and actually prolongs the life of knife blades. You can even use both sides! The cutting mats feature 3mm thick PVC, 5-layer construction, a non-slip, non-glare surface, 1/2 inch grid with 1/8 inch marks for precise alignment as well as 45' and 60' guides.