Doo PVC Clipboard has built-in retractable hanging holes, thinner clipboard has a sturdy metal clip which can ensure 80 A4 size papers clamped firmly and easily. The clipboard is made of The clipboard is made of high quality pvc, accented with hand-stitched edges, which is waterproof and durable. Round edges design ensures that our customer will never have to worry about hurt. Perfect using in transportation, home, school and industry.