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 will fit most 88 note keyboards with an interior size of 57.5” x 18” x 6.75” (inches).