Just pull the tab of one zipper through the other, then the second one back through the first.
This video explains, and the end result keeps stray hands out of your gear.
Quick Tip: Secure Your Camera Zippers Without A Padlock| DIY Photography
Secure Your Bag or Backpack Zippers with a Quick Twist
If you're traveling or out around town without a lock to keep your backpack secured, try this simple method to secure the zipper. Just pull the tab of
