What is "deze"

In Zimbabwean Shona music, a deze is a halved calabash gourd in which an mbira is placed in order to amplify its sound. It is typically round in shape and has bottle caps, shells or other objects strung around its perimeter which vibrate with the mbira, creating a buzzing sound. Cracked deze frequently are repaired by wire stitching. Modern deze are often constructed out of fiberglass and epoxy for increased durability.