Thick cardboard (white front, gray back) A4, 50 sheets Thickness per sheet: Approximately 0.40mm Paper thickness is measured by an amateur, so there may be some errors. This is thick cardboard with a white front and a gray back. It is used for backing boards, core materials, packaging, patterns, etc. This item has been stored by an individual. There may be scratches, stains, and scuffs on the paper surface. It is not a perfect product. Also, there are limitations to accurately representing the actual color in the images. ⚠️Please purchase only if you understand and agree to these conditions. #SpecialtyPaper #Poster #Origami #Craft #FancyPaper #WashiPaper #Hako #Letter #PaperCraft #Envelope #ThickPaper #Crafting #Calendar #Handmade #Collage #Pattern #Packaging #WrappingPaper #Printing #Label #Decoration #Stationery #Card #BusinessCard #ChopstickWrappers #Diary #Invitation #PaperMaterials #Catalog #Wrapping #BackingBoard #Cover #NoshiPaper #Menu #PochiBukuro #PaperCutting #Chigiri-e #BookCover #Mounting #Flyer #PaperBag #ThinPaper #Placemat #Printmaking #FlatBag #ThankYouLetter #ThankYouCard #PaperContainer #FolkCraft #Kakegami #Chiyogami #Kaishi #NameTag #Tag #PriceTag #MinoWashi #IyoWashi #TosaWashi #KomaPaper #FlowerArt #FlowerArrangement #OKBall