24" x 36" self-healing professional quality cutting mat especially designed for use with OLFA standard-duty cutters, heavy-duty cutters, art knives, rotary cutters and specialty cutters. Double-sided with green base color and gray grid lines on one side for precision cutting, solid green on opposite for general cutting. 3.0mm thick for a variety of applications. Store flat., mat boards, film, sleeves, etc. Helps maintain blade sharpness and "self-heals" to last for years. Available in opaque green and translucent (for use on light boxes).