The jacket is the ultimate lightweight compact model, defying conventional wisdom with a weight of only 169g. Made from our original waterproof breathable material and an ultrathin shell, and designed down to the last detail to reduce weight, this is the lightest of all of Montbell's line of rainwear. Outfitted with ventilation for increased comfort and a reflective print for greater safety. Whether with true mountain climbing, in which every last gram of weight counts, or activities like trekking that require light weight equipment, this is the ultimate value in "Light & Fast®" rainwear. It has a streamlined silhouette with no superfluous material.