This is thick paper (cardboard). The front is a glossy white, and the back is gray. The size is 29.7cm x 20.0cm, which is almost A4 size (29.7cm x 21.0cm). The thickness is about 0.5mm. There are 40 sheets. It is quite thick and I think it will be easy to use. As well as thick paper, how about using it for handmade crafts, as a backing board or material for creating works of art? *Please note that the wrapping paper used to package the product is reused due to the recent rise in paper prices. #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 board #bookbinding #reinforcement #core material #protection #book packaging #magazine protection #magazine packaging #card protection #A4