Marcus Bonna cases are among the top choice in instrument cases for musicians all over the world. These cases are made of fiberglass and covered in black nylon with the S.E. Shires Co. logo. With an adaptable system, our S.E. Shires Marcus Bonna cases can be adapted to fit instruments safely and properly. By combining the flexibility and lightweight design of a gig bag with the superior strength and durability of a traditional case, the S.E. Shires Marcus Bonna cases are a perfect fit for musicians!