Guild Deluxe Humidified Archtop Wood Case - Jumbo (F)Keep Your Guild Jumbo Safe and Humidified in One Place Keeping your acoustic guitar at the proper humidity level is one of the easiest ways that you can take care of your instrument. Guild's Deluxe Humidified Archtop wood case has a built in Humicase humidifier that keeps your guitar at just the right humidity level between uses. This case will provide you with the rugged protection that your guitar needs without sacrificing the classic hardshell