This full color booklet is an abridged optional companion to "The Adventurer's Guide to Enjoyable Backpacking" by Craig Bohmrich. The "Field Refresher Guide" is intended for use by readers of the main book only. A few new photos and summarized content make this booklet an excellent way to refresh the reader's memory on the road or in the field. The original book is compressed into this "field Refresher Guide" with only 50 pages of text, illustrations and photos in the same 5.5" x 8.5" format as the original full sized book. This allows it to stack cozily on top of the main book or rest neatly next to it on a shelf. Matching cover art keeps the association of the two clear. It is not intended to be sold alone but as a companion to the main book only.