Since your body temperature changes as you work through your runs, get a jacket that can change with youthe Sugoi Women's Versa Jacket. Zip-off sleeves let you control the amount of protection and warmth you need as you tear down the trail. MicroFine fabric offers water-resistance if it starts to rain or snow and stays breathable throughout your run so you don't overheat. If it's still a bit chilly to zip off the sleeves, a back partially open yoke provides venting. When the wind kicks up, cinch the hemline adjustable shock cord.