With warmer fall and spring temperatures, or if you're lucky enough to live where winter means mild conditions, this jacket is ideal for those days when it's not cold enough to cover your ears. This carefully chosen fabric is warm enough to protect against cold but at the same time light enough to prevent the rider from overheating when temperatures get warmer. It remains highly breathable and just basically disappears so you don't really notice it. We've given it a close-to-body fit so there's no fabric flapping in the wind, which also helps keep the jacket warmer.