The AlumaLock cases are constructed with a strong aluminum frame and reinforced radius corners. The exterior side panels are coated with a textured PVC for protection and appearance. The interior of each case is lined with interlocking convoluted foam for maximum protection, ensuring the valuable contents are held firmly in place during transport. There are two heavy duty, locking elbow hinges on each door that prevent the case from accidentally closing, a feature that will reduce scratches and wear on firearms and other valuables. Each case is equipped with keyed locking latches and is airline approved.