The Creative Grids® rotary cutting mats are self-healing and double-sided. Our 5 layer cutting mat gives you two cutting surfaces and two separate layers of self-healing material. Both sides are blank in the middle, making this the perfect mat to use in video demonstrations. An 18in x 24in perimeter is printed with 1in tick marks and numbers on the outside of the grid area so they are always visible while you work. Grey on one side to work with lighter fabrics, and light grey on the second side for working with dark fabrics. This mat contains the best features of our mats for the influencers, educators, and designers in the quilting world today. • Color: Grey and Light Grey • Use: Cutting Mat • Grid Size: 18in x 24in • Total Size: 19-1/8in x 25in