The ULTRA GORE-TEX® SHAKEDRY™ Jacket is not only lightweight and packs small, it also offers a really special feature: Its back has a zipper to allow it to expand. This unique construction makes it possible to wear the jacket over your pack during passing showers without losing the fit or any freedom of movement. This means all of your essentials stay dry without adding any extra weight to your load. The jacket can be stowed in its own hood. Reflektivity ensures increased safety.