... ,250gsm,300gsm)Offset paper (80gsm,100gsm)Cardboard (1.5mm, 2mm, etc)Foam for for the cover, etcSizeA4, A5, 8.5x11 inch, etc. depends ... like:-the quantity-the size-cover: the stock&weight of paper, pages, full color or single color, CMYK or pantone, print ... or double sides, surface finish-inner: the stock&weight of paper, pages, full color or single color, CMYK or pantone, line ...