Music Nomad MN301 Replacement Humid-i-Bar Sponge for Humitar Humidifier Replacement Humid-i-Bar used in the Music Nomad Humitar Humidifier (sold separately) Holds 10x its weight in water and features anti-drip, no-mess material Easy to use and low maintenance Works with the Humitar to safely release moisture evenly to eliminate warping, shrinking, and cracking Use distilled water only