There’s no arguing that denim jackets are perfect transitional outerwear: throw one on in the seasons when the weather’s neither here nor there and you’ll almost certainly be set for the day. Get too hot? Tie it around your waist. Too cold? Add a scarf or a hoodie underneath. But when the temperature deviates from that sweet spot—like, say, right now, when even Los Angeles is breaking out their beanies—can you still keep wearing that beloved jean jacket of yours? Or should it be confined to the neglected reaches of your closet for another few months?