The Pioneer Jacket is the most effective piece in its category. Lightweight, waterproof, windproof, durable, stretchable, warm, packable, and quiet, what more could you ask for. Rivers West fleece is the pinnacle for outdoorsmen who either hunt, fish, or trek through the backwoods. The Pioneer jacket will be the best jacket you will ever own. Perfect in a pinch or planning for cold weather, the Pioneer jacket will deliver. PRO-TIP: when the temperature drops the Pioneer exterior fleece and waterproof membrane are amazing at trapping in your body heating. So if you are looking at colder temperatures, layer up under the Pioneer jacket and you wont even notice a difference.