If you've got a Martin GPCPA5K guitar, then you need this hard case. Martin's GPCPA5K hardshell case is tough and built to last. This case has a plush lining to cradle your guitar while keeping it safe from unwanted dings and scratches. A hard case will also keep out dust, dirt, rain, and more. If you take your guitar to gigs, or just want to keep it in prime condition, then you need the Martin GPCPA5K hardshell case!