Lightweight down jackets really start to come into their own in the fall. These jackets pack up small and light, and deliver a surprising amount of cosiness for their bulk and weight. They're also great for layering, if you need a little extra protection against the elements.A number of big outdoor retailers are running deals events right now, with some particularly good discounts on down (and synthetic down) jackets. I've rounded up my top recommendations below — including a number of my favorite brands from my time spent reviewing outdoors kit.Some of these are pretty major discounts, so it stands to reason they're selling quickly. I've tried to stick to options where there's still a good range of sizes left, but if you're in the mood for some digging around, there are more excellent down jacket deals (with limited stock and sizes) available on each retailer's site. Pick one up now and you'll thank me when the cold weather really sets in.Men's down jacket dealsHop to the women's down jacket deals section Rab Electron Pro Down Hoody - Men's The North Face Terra Peak Hoodie Insulated Jacket - Men's REI Microtrek Insulated Hoodie - Men's The North Face Terra Peak Insulated Jacket - Men's Marmot WarmCube Active Novus Insulated Jacket - Men's Helly Hansen Verglas Down Hybrid Hooded Jacket 2 - Men's Helly Hansen Verglas Down Jacket 2.0 - Men's Patagonia Light Gust Jacket - Men's Cotopaxi Fuego Hooded Down Jacket - Men's The North Face Aconcagua 3 Down Jacket - Men's Rab Microlight Alpine Down Jacket - Men's Women's down jacket deals The North Face Classic Down Jacket - Women's Cotopaxi Capa Insulated Hooded Jacket - Women's Helly Hansen Avanti Down Mid-Layer Jacket - Women's Arc'Teryx Cerium Down Hoody - Women's Mammut Aenergy IN Hooded Jacket - Women's Helly Hansen Verglas Down Hybrid Hooded Jacket 2.0 - Women's Mountain Hardware Stretchdown Insulated Hoody - Women's backcountry Stretchdown Jacket - Women's The North Face ThermoBall Hooded Parka - Women's Mountain Hardware Ghost Whisperer Hooded Down Jacket - Women's