I just received a renewed passport. All my previous passports ended up curled and warped from being in my pockets or backpack. I saw some other holders available, but they had more features than I desired. I just wanted to be able to keep my Passport Book and Passport Card accessible in my pocket without deforming it. This holds both securely while keeping them accessible for presentation. I took it on a recent trip internationally, and it fit very comfortably in my pocket and protected both items very well as I went through airports and the various identification stops involved. It's a very simple print with good benefits.

I printed it using PETG for durability.