Shirt, or jacket? That's the question. The Analog Conduct Shirt Jacket has dialed in your optimal solution - both. The Conduct is a single layer designed to shed weather without bulking you up. Freeride when the sun hits the slopes or trek around town in 40 grams of cozy poly fill insulation while you're out sampling the winter bar scene. This durable cotton and nylon shacket is treated with Analog's Weather Wash water-repellent technology.