... time 4. eco-friendly paper & ink Magic music book for baby:Board book printingPaper material:White cardboard, grey back cardboard ... tray, sponge, PVC/PET/PP window, discs, small toys like crayons, markers, garland paper, watercolors, glues, pen, pencils, and so ... At least 300dpi resolution.Packing details:Double Wall Corrugated Carton for Exporting and craft paper warpped inside, size per your book ...