This is thick paper (cardboard). The front is glossy white, and the back is gray. The size is 21.0cm x 14.0cm. ※Since A5 size is 21.0cm x 14.8cm, this is 8mm smaller than A5 size. The thickness is about 0.5mm. The number of sheets is 100. It is thick and I think it is easy to use. As well as thick paper, how about using it for handmade crafts, artwork, backing paper, or materials? ※The wrapping paper used to wrap the product is reused due to the recent price increase of paper, so please understand. #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 #photo protection #trading card packaging #packaging #padding paper #book packaging #A5