This backpack has stuff...

...and that stuff will help you survive.

Make sure your survival kit is:

  • Able to hold different-sized items
  • Is durable
  • Able to withstand oncoming water
  • Lightweight
  • Attachable to something on your body
  • Easy to carry

In your survival kit, you should pack:

  • First-Aid items (bandages, gauze, butterfly sutures/stitching)
  • Water purifying items (iodine)
  • Water storage items (self-filtering water bottles, normal water bottles, condoms)
  • Fire-starting items (waterproof matches, lighter, tinder, hand lens)
  • Signaling items (small mirror, flares)
  • Food procurement items (fish hooks and fishing line, snare wire)
  • Items for shelter (blankets)
  • Clothing items (jacket, hat, shoes)

Also, items such as a spile, knife, and a (possibly) and handgun or a bow and arrow should be taken. A splie will allow easier access to fluids, a handgun could be used for signaling defensive purposes, and a bow and arrow could be used for defensive or hunting purposes.
Food is important to bring along, as well. Energy bars are a good, nutritious item to pack.
A compass is also a crucial item to bring along so you don;t lose your sense of direction. It can also be used as a good signaling item.
Congratulations! You are now able to survive in the wild!