A good denim jacket is one of the most genuinely useful things you will ever buy, and also one of the easiest to get completely wrong. Too stiff and it sits unworn. Too pale and it reads cheap. Too oversized and it swamps rather than relaxes. We have been through enough disappointing options to know exactly what separates the ones worth spending on from the ones that look fine on a hanger and feel awkward everywhere else. The blue ones are where we always return. There is something about that classic indigo through to mid wash range that works with almost everything without feeling like a safe or boring choice. It layers over summer dresses beautifully. It finishes off a simple outfit without competing with it. It travels well and improves slightly with age in a way that almost no other piece does. These are the denim jackets we have actually tested against real wardrobes and real occasions. The ones that fit properly across the shoulders, move well, and earn their place in the rotation every single season. Buy once, wear indefinitely.