For the humidity demands of the desert, mountain states or frigid north exceed the humidification capacity of the device there is the
Oasis Plus Guitar Humidifier. The Oasis Plus is the same size and shape as the original blue Oasis guitar humidifier, but is made of a different material which provides 50% more humidity output.
Because the Plus is the same size as the original Blue Oasis and it has 50% greater humidity output, it will be necessary to refill the Oasis Plus more frequently than the original Blue Oasis.