Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I'll bet that this is a tiny book...

to save on weight. When you are packing, every little bit of weight counts. I am planning on a week long backpacking trip and looking for a first aid book, one of the things I looked for was a small book. They reduced the font and the print size to keep the weight down... 6.4 oz =:) out of the 35 pounds I allotted some of which is food (about 10 pounds) and my pack (which weighs 5), you can see that ounces make a difference and you have to be judicious in what you include.