This is thick paper (cardboard). The front is a matte white, and the back is gray. The size is 20.0cm x 14.0cm, which is close to A5 size (21.0cm x 14.8cm). The thickness is about 1.0mm. The number of sheets is 60. It is also thick and I think it is easy to use. How about using it not only as thick paper, but also as backing paper or material for handmade crafts and artwork? *Please note that the wrapping paper used to package the product is reused due to the recent price increase of paper. m(_ _)m #paper goods #specialty paper #handmade #handmade materials #handmade supplies #papercraft #papercraft materials #papercraft supplies #craft punch #die cut #paper #paper #cardboard #white cardboard #white paperboard #chipboard #chipboard paper #thick paper #craft #paperboard #backing paper #bookbinding #reinforcement #core material #protection #book packaging #magazine protection #magazine packaging #card protection #A5 #yu-packet post mini