Lightweight. Breathable. Packable. Wind- and rain-resistant. It's the Dirt Roamer Jacket from Patagonia. Designed for mountain biking, it's a great jacket for late-season rides, as temperatures start to drop a little quicker and the days aren't as long. Unlike many other jackets, the Dirt Roamer is loose-fitting, which is great for movement and comfort. It also hangs down lower than most jackets, helping protect your posterior from the backsplash of mud and rain. Available online; $229.