Self-Healing Cutting Mat 12" x 18" Grid Approximately 18" Long x 12" Wide x 0.125" Tall Self-Healing Cutting Mat for Art or Craft Projects; Green Face w/ Grid Lines; Labeled in Inches and Centimeters; Unique Resilient Material Resists Blade Damage Provides Solid Cutting Surface, then Heals Immediately; Includes Grid Lines and 45 and 60 Angles; Great for Artists, Quilters, Drafters, Designers, and More!