This innovative new accessory for the Stubby AIO range is designed to get the full use out of the Stubby AIO! The Tallboy RBA Tank lets one use their favourite boro RBA/Bridge and keep a tank refill under the boro tank. This new system removes the need to bring a bottle of liquid on long trips away from home as well as giving the option to run different liquids to change through out the day! If you are looking for an all day set up – look no further in pairing one of the latest TallBoy tanks with any of our Stubby AIO devices!