Valuable notes and data are permanently secured in these Nalgene hardcover case-bound books. These books have a thick polyethylene cover and uncoated PolyPaper pages and are completely waterproof and extremely chemical resistant. 100 pages (50 sheets) are numbered and printed with a fine green 1/4 inch grid. Pages include spaces for dates and signatures of workers or witnesses providing necessary documentation for securing patent protection. Other pages include instructions for keeping research records a table of contents and a page for issuing the notebook. Cover Color: Black. Page Dimensions (W x L): 9-1/4 x 11-1/4 inches. Nalgene #: 6300-1000.