Messenger bags and briefcases look better because they're decent. You hold them in one hand and you walk around. But what happens if you wanted to change it into a good old backpack? After all, knapsacks are the most comfortable ones.

Reddit user turnTheLead demonstrates how you can just take pretty much any messenger bag or briefcase and turn it into a backpack in just a few seconds.

He explains it step by step:

Lengthen the shoulder strap all the way.
Pass the shoulder strap through the handles
Open it up so you have two holes for your arms to go through.
Put it on and be hands-free, ready to fight or eat a hot dog.
Pretty cool. For more pictures, check out the full post over at Reddit.

[Reddit: Life Pro Tips]