... Sizedifferent size can accept or according to the client's approveColorpantone as well as CMYK ... artwork ,printing,etc.....Sample time5 days to finish the sampleAccessoryPVC/PET window, ribbon, magnet seal, insert ... the 1 step service from printing,surface disposal , materials die-cutting,craftsmanship.QC,packing .delivery .therefore quality ... Children book printing,High quality custom 3D book printing