Lulu uses FSC-certified, lead-free, acid-free, buffered paper made from wood-based pulp. Cover StockPaperback Saddle Stitch: 100# laminated cover stockPaperback Perfect Bound and Coil Bound: 100# laminated cover stockHardcover: 80# endsheet stock Please note: not all printers add a flyleaf, but they all use endsheets.Casewrap - 80# gloss laminated white cover stockDust Jacket: Cover - Linen with foil stamp on the spine (max 42 characters including spaces)Jacket - 80# gloss laminated white cover stockInterior PaperPaper weights and options vary by product line, format, and country in which the book is ultimately printed. For more information about paper options, please visit our Pricing Calculator where you can view a complete list of available book formats, specifications, and finishes.60# Cream – UncoatedCream uncoated is perfect for novels or other text only books. The soft cream tone is easy on the eyes while providing a tactile feel to the page. We recommend pairing the cream paper with black & white content for an affordable quality option.60# White – UncoatedWhite uncoated is our most versatile and affordable option. It offers the same feel as our Cream stock while being suited for both color or black & white content. It is hard to go wrong with this paper choice as it works well with nearly any type of content.80# White – CoatedWhite coated is a high opacity paper suited for photo books, magazines, comics, and any content containing high resolution images. The thin coating helps preserve the richness of your images and creates a slight sheen making the pages stand out. We highly recommend pairing this with our Premium print quality option for stunning photo reproduction.100# White – Coated (Calendar Only)Extra thick and durable cover stock used specifically for our calendars. Designed to print images in beautiful high-definition while withstanding additional wear-and-tear. This coated stock allows you to easily add reminders to the calendar with a ballpoint pen.