It has the ability to keep you warm and protected from cold winds, is made with a material is able to release some degree of built up moisture and heat, and doesn't take up much space in your backpack. The U.L Stretch Wind Parka is made with Ballistic Airlight rip-stop nylon to keep it lightweight, packable, and give just the right balance of breathability and wind resistance. In order to increase comfort and versatility, we've cut the fabric "on the bias," a construction technique Montbell has long used to give our sleeping bags excellent stretch and unparalleled range of movement. Despite only weighing 4.1 oz, the U.L. Stretch Wind Parka is fully featured with hand pockets, draw cord adjustment at the hem and hood, and to top it all off, this gem is treated with Montbell's proprietary durable water repellent, Polkatex®, to shed light precipitation. These features make the U.L. Stretch Wind Parka a great addition to any outdoor enthusiast's kit.