1.The moisture reservoir is suspended inside the body, the system releases moisture evenly and slowly inside your guitar without actually touching the instrument 2.A high absorption sponge maintains proper humidity levels, once it becomes dry, you have to refill it by dropping the water into the hole in the top or Soak in the water, very easy and convenience to use 3.The Soarun acoustic guitar humidifier protects you precious instrument from shrinking, warping and cracking in the driest and toughest conditions
