The blazer is the piece most men either overestimate or completely misread. Wear the wrong one and you look like you’ve raided a suit that lost its trousers. Wear the right one and suddenly a pair of dark jeans looks considered, a smart casual dress code stops being stressful, and you have an answer for roughly half the situations your wardrobe used to struggle with. We’ve been looking specifically at blazers that do real work across multiple occasions without leaning too hard into either formal or casual territory. Construction matters here. So does fabric weight and how the shoulders sit. A great blazer should feel like it belongs with chinos on a Friday and a wool trouser on a Tuesday without any awkward convincing. We’ve avoided anything that only works one way. These are the ones that earn their space in the wardrobe by being useful far more often than you’d expect a single piece to be.