The PCS Retrofit kit can be installed in your favorite hydration pack -leaving the drinking hose intact for dual-use. The kit includes everything you'll need to head outinto the heat. Simply Install the ExtremeMist PCS (Personal Cooling System) in your day-[ack,backpack or existing hydration pack in minutes. Upgrade your ordinary backpack to a 2-n-1hydration pack. Wirelessly Drinking and misting from a Compact, lightweight,professional-grade,Retrofit kit. Your extraordinary system now provides a continuous atomized mist in front of you,creating a cooling mist cloud that can reduce the air temperature up to 30degF. The high-pressurepump has 8 speeds, all controlled via its wireless remote. At low speeds, water consumption isonly about 1.5 to 2.5 cups per hour of continuous use, and the battery lasts at least 12 hours.The battery can be fast-charged with an included wall charger or charged via USB cord. ThePCS Battery doubles as a Power Bank to charge your mobile devices or outdoor gadgets for theday. Modify your hydration pack now!