This 24″ x 36″ green, self-healing cutting mat (23″ x 35″ grid) is double sided and offers the convenience of imperial measurements on one side and metric on the other. 3 ply green mat. Double sided – imperial on one side, metric on the other. Protects cutting surface and extends the life of cutting tools. Convenient 30, 45 and 60 markings on the imperial side of the mat.