Self Healing Cutting Mat, 11 Inch x 17 InchProduct Details:* Dimensions: 11″ x 17″ x 0.125″ Thick* Self Healing PVC Material / Small Cuts in Material Heal Them Self* One Side Marked With A Partial Compass And Circles Within Circles* Compass Side Has 4 Quadrants With Centimeters Markings* Other Side Perimeter Is Marked In Inches and Centimeters With Divisions* One Side has a 60 Degree Line and 2 x 45 Degree Lines Crossed* Green Mat With Yellow MarkingsEnkay4118