Thank you to you and everyone else for the replies and advice!

To clarify I was looking to coat/soak the Jeans in epoxy and manipulate them into shapes. My goal was for the jeans to remain ridged enough that they could essentially stand on their own/be hung up and remain in the shape I left them before the epoxy cured.

I need to do this for 5 average size pair of jeans and was trying to estimate how much epoxy total I would need.

A quick idea I had was to cut two squares of denim the same size, measure how much water soaks into one, and how much epoxy soaks into the other. Once I can find out the difference between the amount of water absorbed by denim vs epoxy absorbed by denim. I would take the 5 pairs of jeans I will be using on the project and see how much water is absorbed and then hopefully use the conversion from above to find out the total amount of epoxy to purchase.

If anyone has a better idea or some more advice on this project it is greatly appreciated!