Rite in the Rain 935T Tan Tactical Pocket Notebook 3-inch x 5-inch, 10-Pack

Amazon.com Price: $39.99 $39.98 (as of 05/01/2018 14:35 PST- Details)

Rite in the Rain is an all-weather writing paper made to shed water in any weather condition.
It is widely used around the world for recording critical field data in all kinds of weather.
For best results, use a pencil or all-weather pen.