This is thick paper (cardboard). The front is glossy white, and the back is gray. The size is A4 (21cm x 29.7cm). The thickness is about 0.6mm. The number of sheets is 50. It is also thick and I think it is easy to use. How about using it not only as thick paper, but also for handmade crafts, as a backing board or material for creating works? *Please note that the wrapping paper used to package the product is reused due to the recent rise in paper prices. #PaperGoods #SpecialtyPaper #Handmade #HandmadeMaterials #HandmadeSupplies #PaperCraft #PaperCraftMaterials #PaperCraftSupplies #CraftPunch #DieCut #Paper #Paper #Cardboard #WhiteCardboard #WhiteCardboard #Chipboard #ChipboardPaper #ThickPaper #Crafts #Cardboard #BackingBoard #Bookbinding #Reinforcement #CoreMaterial #Protection #Packaging #PackagingMaterials #CardProtection #BookPackaging #A4