Gator Cases GKB Series Keyboard Gig Bags feature 20 mm padding with a rugged 600-Denier ballistic Nylon material. Adjustable padded secure straps to hold keyboard in place during transport. Each bag features large #10 Zippers, Reinforced comfort carry handles, and a large exterior accessory pocket. The GKB-88 SLXL will fit most Slim line, extra long 88 note keyboards with an interior size of 59” x 15” x 6” (inches)