A daypack is pretty useful on a Philmont trek, but only if it is really light. The Gossamer Gear Riksak is 2.9 ounces and doubles as a stuff sack. It is made of silnylon and costs $30.
Gossamer Gear Riksak at Philmont
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Most Casual Observer
In physics class, many things are intuitively obvious to the most casual observer. Welcome to my casual observations.
Most Casual Observer 