Under Armour OUTRUN THE STORM The Under Armour OUTRUN THE STORM running jacket is equipped with UA Storm technology, which repels water without reducing breathability. The windproof construction protects you from bad weather. Durable, lightweight stretch fabric provides improved mobility and comfort. 4-Way Stretch technology allows for better movement in every direction. The jacket has ventilation holes on the back for better breathability. Under Armour OUTRUN THE STORM