A Clear Plastic Pouch On A Leather Vest To Display Patches?

[Ebchamorro]

Hi, my first post.

I have a simple Wilson leather vest with a lot of travel patches sown on the front.

I was wondering if it would be possible to use a clear plastic square on the top back like the pocket in a wallet for your id to hold patches for display?

My idea would be to take a clear heavy duty plastic square and have it trimmed on the sides and bottom and then sewn on the top back of the vest behind the collar area behind my neck.

I could then slide any patch I want into the clear pouch, such as changing sports teams throughout the year.

Would the plastic breakdown the leather? Is there a preferred type of plastic?

Would the plastic capture moisture and get all clouded or cause the leather to breakdown?

Thanks for any help!