“These are just about what they say on the cover - waterproof notebooks. The pages are plastic paper, I can write on them dry or wet! The pages seem to take pencil, ballpoint and felt-tip well.” (flyfishing-and-flytying.co.uk) “The convenient size of the smaller version is ideal for note-taking and sketches. Printed on plastic waterproof paper which can be written ... Read moreon using most writing tools, the pages can be re-used if writing with a pencil or chinograph. The spiral binding allows the book to be opened flat / folded back. The book is great for making notes near water or when it might rain.” (Towpath Talk) “great for pilotage notes, on-the-go log entries or sketches.” (Sailing Today) Show Less