For extended treks the internal frame pack should have a volume over 3,000 cubic inches (50 liters), but less than 4,200 cubic inches (70 liters).
Arbitrary numbers (like 30% of his body weight) are interesting starting points for discussion, but the real determination is how much he can carry on the practice hikes.
Description of pack list items Personal Gear: Backpack: There are two main types of backpacks: the external frame and the internal frame.
Small mouth bottles are difficult to clean and to fill with a water filter, or a drink mix.
Some scouts and adults use a bladder system, such as Platypus or Camelbak, for easier access.
Self-inflating pads are not good for Scouts because they can be punctured.
A “backpacker’s pillow” is an optional added piece of comfort, or you can use your sleeping bag’s stuff sack filled with your fleece jacket and a tee shirt as a pillow case.
It is even possible to be less than the “Low End Weight”, which is what you should be striving to make.
Clothing low-6.5 high-9.5 Personal Gear low-9.9 high-17.5 Tent Mate Gear low-3.1 high-4.1 Troop Gear (12 hikers) low-3.1 high-3.1 Optional Items low-0 high-6.0 Total Pack Weight low-22.6 pounds high-40.2 pounds (this is crazy high!
Save weight by building your own First Aid kit with a Ziplock bag and supplies.