The case for a stretch blazer is simple and most men are still sleeping on it. A structured wool blazer is a great thing but it also requires a certain kind of day, a certain kind of mood, and a certain amount of sitting still. A stretch blazer asks far less of you. It travels without looking like you slept in it. It moves with you through a long day without pulling across the shoulders or riding up every time you reach for something. We have been particularly interested in the ones that hold a clean silhouette without sacrificing any of that give, because the worst stretch blazers look casual in the wrong way. Soft, yes. Shapeless, no. The best options in here work over a crew neck, over a shirt, and honestly over a decent T shirt if the fit is right. They belong in the regular rotation, not just as a backup plan.