ESEE/Rite in the Rain RAT survival / nav cards, NAV-CARD

The ESEE survival / navigation notebook with cards is a great tool when reading a map in the wild. The notebook contains plastic, credit card-shaped cards with essential survival and map-reading information. From tricks to better estimate the width of a river to map and compass tools. These cards are attached to the notebook made from waterproof paper with the help of plastic screw. You can easily loosen this screw by hand after which you can also use the cards individually.