Eco-friendly chart pad is made using a high percentage of recycled material with post-consumer fiber. Acid-free pages are padded and taped to a heavy chipboard back for writing support. Sheets are 1-1/2" ruled with a 3/4" broken midline and 1/2" skip space. This pad is five-hole drilled to fit standard, chart stands and easels. Chart pad is processed chlorine-free and recyclable.