Each bag is designed to support 2 people and have about 3-5 days worth of calories. Since you never know where you will be 'go'ing tried to play out as many likely scenarios'.
No one should take this post as a warning but it's a good idea to be prepared for… twitter.com/i/web/status/1…
Here is an overall shot.
If you gotta trek you need the proper attire and shoes.
If you notice in the left corner each member of the family has one of these accessory bad.