
This is almost what I was hoping for. Completely made of silicone, no plastic, small protective edge. It is tight both vertically (the license plate fits but needs to be inserted carefully and on the last few millimeters with a hammer) and horizontally. I've attached a photo to show the latter, you can see my license plate sticking out from the side, it's actually in the middle and pulling down on either side, but I couldn't capture that in the photo. I think it should be 5mm longer.

Jacques Bogart One Man Show eau de toilette, 100 ml
13 Review

Unbreakable Black License Plate Frame & Cover Combo - Aootf Clear Bubble Novelty Plate Protector To Protect Car Tags, Plates, Screws And Caps.
14 Review

Grey Silicone License Plate Frame With Patented 5 Drainage Holes - Rain-Proof, Anti-Rust, And Anti-Rattle - Ideal For Car License Plates
18 Review

Set Of 2 Black Aujen Silicone License Plate Frames For US Standard Cars - Street Legal Cover With Easy Installation And Rattle-Proof Holder For Optimal Protection
35 Review