Staying warm during Fall usually means layering to cut the cold. But if you're the active type who prefers to keep it simple for better motion, you'll need a jacket that's great at trapping warm air. Lucky for you, Mobile Warming makes lightweight Soft Shell Jackets ($180) guaranteed to make you warmer and happier. Their jackets feature 4-way stretch fabric that's waterproof, yet breathable and equipped with three heating panels (two on the chest and one on the back) lined with steel alloy fiber elements. The heating panels run on a rechargeable lithium-ion battery which can hold enough juice for up to 10 hours of power.