Features: You can send the kraft board to your parents, children, wife, girlfriend, classmates and friends. This can improve your relationship. The chipboard sheets are proper in size and light in weight, can be put in your bags or backpacks, without taking up too much space. Specifications: Material: kraft paper Color: gray Size: approx. 30.5 cm/ 12 inches in length, 30.5 cm/ 12 inches in width, 1.7 mm/ 0.07 inches in thickness Package includes: 20 x Book boards Notes: Manual measurement, please allow slight errors on size. The color may exist slight difference due to different screen displays.