This long-time favorite of ours is small enough to fit in almost any case, but hugely effective in maintaining proper humidity for your valuable instrument.
It’s easy to fill and does not spill due to its well thought out design. Easily adjusted control valve and vapor vents release just enough moisture to keep your instrument correctly humidified.
Made of durable plastic. Measures 2.5″ by .75″. Made in the USA by Humistat.