Currently, the Hydrastash built-in apparel system can only be used in Hydrastash ready jackets. These jackets have been specially designed to seamlessly integrate the Hydrastash system consisting of the reservoir, Microtube and Microbite valve. Your current jacket does not have the correct snowskirt adaptability or design, nor does it have the Hydrastash full zip channel to hold the Microtube to take advantage of the Hydrastash in-apparel. We will be adding more styles coming very soon that can adapt to the Hydrastash system.