Green with printed grid on one side, black with printed grid on the other. It comes rolled and will flatten to its full size of 40 x 60. Professional quality for all kinds of graphic arts, hobby, craft, shop, and industrial applications, these self-healing and reversible cutting mats are 3mm thick and extra durable. Made from unique composite vinyl material designed for both rotary blades and straight utility blades, they provide a long-lasting, non-glare, surface that can be cut and slashed constantly without showing marks or cutting lines. Can also be used as a desk blotter or general-purpose work mat. * Self-healing, reversible, non-glare surface is 3mm thick and extra durable * Designed for both rotary knives and straight utility knives. Will not dull blades * Printed grid pattern includes guide lines for 45° and 60° angles and ½" grid lines * All four edges are fully numbered and graduated with 1/8" hash marks that extend beyond the zero base line for convenience * All mat sizes 24" x 36" and above include internal horizontal and vertical graduated hash marks * Non-stick surface is impervious to abrasions and liquid spills * Hanging hole for convenient storage.