Cover made from durable 2250D PU coated ballistic nylon Clear-window pockets on the inside and outside with velcro closure of the back cover for important items such as tables, checklist, compass etc. and inner front cover inside pocket Contains 23 pages of reusable waterproof plastic foil sheaths (w/6 tables) Material: Replaceable plastic foil sheaths with 1000 denier nylon cover Elastic pencil holders + storage space for pencil + graphite pencil Elastic bookmark allows to mark a sheath for quick reference Elastic secure closure loop Elastic shockcord attachment for bolt snapMAIN FEATURES: Water resistant notebook. Ideal for underwater communication, for decostops and for making notesTECHNICAL FEATURES: Dimension Close 200 mm x 125 mm x 15 mm Dimension Open 200 mm × 250 mm x 15 mm