Replacement sponge for the MN300 humidifier. The Humid-i-Bar absorbs significantly more water than competing products, so you don't have to check the humidifier as often.

Humid-i-Bar Sponge

Replacement Sponge for MusicNomad Humidifier

Ensures that your instrument is kept in an environment that protects it from drying out and damage. It absorbs a large amount of water, and the material is very dense to prevent dripping.

If your sponge has stopped working and the humidifier is still in good condition, simply replace the sponge to save money.