Detail 01
Hydrophilic sponge
The sponge can hold up to 12 times its own weight in water.

Independent shopping perspective
D’Addario’s Ukulele Humidifier Pro places its water-holding sponge in the ukulele soundhole. Remove the rubber cap to access the hydrophilic sponge, then use its capacity—up to 12 times its own weight in water—to keep hydration going for longer between refills. Its reduced size is made specifically for ukuleles.


Strong match
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
The sponge can hold up to 12 times its own weight in water.
Detail 02
The cap can be taken off to access the sponge.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
It is designed to fit in a ukulele’s soundhole.
The hydrophilic sponge holds up to 12 times its own weight in water.