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? *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 #WhitePaperboard #Chipboard #ChipboardPaper #ThickPaper #Crafts #Paperboard #BackingPaper #Bookbinding #Reinforcement #CoreMaterial #PhotoProtection #TradingCardPacking #Packing #PaddingPaper #BookPacking #A5