The French.
It's always the French. Every time.
I bought a Renault R 10 motor car in 1966. 4-wheel disc brakes. 4-wheel independent suspension. Most wonderful seats in any car short of a Rolls Royce. And a 998cc engine and no radio...A set of design decisions on the dashboard that left you indecisive...for the six years that I drove it I was never entirely certain what several of the lights meant. I just put oil in the tiny crankcase and hoped for the best...
That said, I contemplated the new line of Cokin filters on the wall. These are round screw-in types - not the square plastic ones that the brand is famous for. They come in a retailer's nightmare of a box - 20% bigger than any other box on the wall and consequently nothing stacks next to it. The French.
Inside the improbably big but undoubtedly stylish packaging is the thinnest UV filter in the universe. See heading picture. These screw onto 77mm and 82mm fittings and then, quite frankly, seem to disappear into the lens itself. Certainly no chance of vignetting on even the widest lenses.
The really good thing for the user is that after purchasing this fine product, screwing it onto the lens, and cleaning it with a Hoodman Lens Cleanse...you can throw the box away. Or use it to store Renault R10 motor cars.
