It's no surprise that when you start sweating, the clothing against your skin gets damp. The problem is that your skin keeps that water from evaporating and results in a cold, uncomfortable wetness while you run. Enter the North Face Better than Naked Jacket. Thanks to a layered ventilation system that pushes heat and moisture out while you're running, you'll stay cool and fresh through to the last mile.
Bonus: It also includes mesh underarm and side panels that allow you to move freely as you run ($130, North Face).