New Balance Impact Run Light Pack Jacket Men's Athletes and runners will love the versatility of the Impact Run Light Pack Jacket. Practical and convenient, the water- and wind-resistant outer layer protects against the elements. When the rain stops and the sun shines, this packable jacket easily folds into the zipped chest pocket, turning it into a waist pack for easy transportation. Athletic fit built to skim your chest, waist and hip – perfect for active movement with a fit that's not too restrictive. Dropped back hem Elastic on exterior of packing pocket easily slips over your wrist for convenient carrying. Hooded for protection from the elements. Lightweight, durable ripstop woven shell helps keep you warm and dry without feeling heavy or bulky. Packable chest pocket lets you pack up the jacket into a small, convenient package when rain stops. Sizing Wind and water-resistant fabric helps protect you from the elements while exercising outdoors.