converting a portfolio into a backpack
 

Recently my daughter decided to get rid of her leather portfolio that she carried her laptop in.
It is in great shape, except for the handles, and perfect for what I would like for my laptop.
Problem is, I would prefer it be a backpack. I am attaching a pic similar to what she gave me.
Any ideas how to redo the straps so it could be a backpack?
I thought of making a "harness" around both sides, to strap on, which run through the metal rings that hold the shoulder strap - but, how to make it nice looking?
Thanks for the input.

It seems a shame to remove the nicely stitched handles, but I don't see how it could possibly be comfortable on your back with them on there. Maybe you could create some sort of padded (quilted?) sling/backpack with a top opening wide enough for this bag to go into? If you just want to try a harness, how about attaching them to the square metal rings on the side handles. That way, they would be pulling from your shoulders toward the middle area, which I think would keep it in place - still would need some major, serious padding there and at the front of the shoulders if I was going to carry it - LOL. Most backpacks I've seen seem to have the straps coming out in an X configuration from the middle area of the back. If you're going to carry anything the least bit heavy, your comfort is the first consideration!

Yes, the handles are the reason she is getting rid of it - the material has shredded, while the rest of the bag looks brand new! Your points about the weight and padding are good thinking. Hmm, maybe I can't use it??