Humidifier For Violin And Viola

 Designed to replace moisture removed from an instrument's structure by climate and air conditioning. • Helps prevent wood cracking • Designed to replace moisture with vapour from an instrument • Internal water retention material • Precision vents for releasing the vapour • Caps designed to keep Humitrons in position • End plugs are sealed to prevent dripping • Made in the USA by RDM • Clips onto the F-hole.