This notebook is a must for travelers who interact a lot with water and rough weather. 
 
Intended for longterm use the pages are made of a polymer composite making them highly resistant to abrasion, chemicals as well as usable submerged underwater for indefinite amounts of time. 
 
Best used with a HB pencil that can be erased from the pages using a regular eraser. Alternatively, instead of an eraser use a bit of sand or dirt to scrub then finish off with a quick rinse. Combined with the Ecopybook Tactical All-Weather Pencil they are an unbeatable duo out in the field.