Protection against dry weather cracking! And you won't have to guess when the Oasis® humidifier needs a water refill. It shrinks as it works! Your guitar is guarded by dual leak protection, too: the outer fabric lets only water vapor pass through, and the super-efficient gel inside absorbs up to 500 times its weight in water.
The Oasis humidifier hangs from the guitar's strings into the soundhole, so it never touches your instrument. It's easy, effective protection inside your guitar case against expensive dry weather wood shrinkage and cracking.