Cardboard, Kraft Cardboard A4, 30 sheets Thickness per sheet: Approximately 0.54mm Please note that the paper thickness is measured by an amateur, so there may be some errors. This is thick paper with a light brown surface. It is durable and strong, and is used for backing boards, files, covers, glued boxes, core materials, packaging, bookbinding, paper materials, crafts, etc. This is a personal storage item. 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 #Kraft #FancyPaper #WashiPaper #GluedBox #Letter #PaperCraft #Envelope #ThickPaper #Craft #Calendar #Handmade #Collage #PatternPaper #Packaging #WrappingPaper #Printing #Label #Decoration #WritingPaper #Stationery #Card #BusinessCard #ChopstickWrappers #Diary #Invitation #PaperMaterials #Catalog #Wrapping #BackingBoard #Cover #NoshiPaper #Menu #Pochi袋 (small envelope) #PaperCutting #Chigiri-e (paper tearing art) #BookCover #Binding #Flyer #PaperBag #ThinPaper #Placemat #Printmaking #FlatBag #ThankYouLetter #ThankYouCard #PaperContainer #FolkCrafts #Kakegami (decorative paper) #Chiyogami (decorative paper) #Kaishi (paper for tea ceremony) #NameTag #Tag #PriceTag #MinoWashi #IyoWashi #TosaWashi #KomaPaper #FlowerArt #FlowerArrangement #KraftBall