When it comes to releasing awful kit designs, Napoli have form. Last year they released a camouflage inspired kit, and today they have followed that up with an all denim number.
I would assume that the material isn’t actually real denim, and is instead just a pattern. Though a part of me does hope it is real denim. Having the Napoli players struggle in a heavy, impractical denim kit would make for good viewing.
Perhaps the denim design is just the start of incorporating a more diverse array of materials in football kits. Corduroy, Leather, and tweed are surely just around the corner.