Useful for all crafts – easily stored, but large enough for almost all projects. Olfa’s unique sandwich structure makes cutting easy. Whether you’re new to crafting or a pro, you’ll appreciate this self-healing Olfa rotary mat. It not only protects your cutting surfaces, it protects the edges of rotary blades. The mat’s grid lines are designed for easy measuring and accurate cutting of straight lines and precise angles. Double sided, inch and centimetres.