FINALLY THE "ALL IN ONE" SOLUTION!
HUMIBUSTER80 - 85mm diameter for most classical guitars.
One product - two fantastic functions. First, feedback problems on stage are eliminated thanks to B U S T E R, wich covers the entire sound hole. Second, after a gig where the stage lights are sucking the life out of your guitar comes H U M I - the humidification system that maintains the relative humidity of your instrument.
CLIMATE PROTECTION - THE KEYWORD FOR YOUR INSTRUMENTS, TOO !