The 1SKB-4214W 61-note keyboard case has a patented corner cleat design, which holds your keyboard in place on an indestructible hook and loop fastener surface. The foam in the top of the lid adds additional support and protection to the keyboard while in transit. Exterior bumpers protect the valance and hardware from impact damage. The latches are made of indestructible fiberglass reinforced nylon and include the new TSA recognized and accepted trigger release latching system which enables you to lock your case and still have it inspected at airport security.