Another notable feature is the locking system, which uses two hydraulic cylinders for redundancy (in case one fails) rather than relying on the older ratchet design. While a ratchet-based restraint locks at one of several positions that can be too loose or uncomfortably tight, the hydraulic system allows the restraints to be pulled down and locked in any position to better match a rider's body dimensions. In the extremely unlikely case where both locking cylinders fail, the restraints are still held down by a seat belt.