The Quad Lock Case for Galaxy S7 is a protective mounting case that incorporates a dual-stage twist-and-lock interface, allowing you to securely mount the phone to any compatible Quad Lock mount (motorcycle, car, bike, etc.).
It features impact-resistant construction, likely combining a rigid core and shock-absorbing outer shell to provide “edge-to-edge” protection of the phone’s surfaces (as described on the Visor Shop listing).
The internal surface likely has a protective lining to reduce the risk of scratches to the phone’s rear.
The dual-stage locking mechanism is advertised as quick to attach/detach but robust, supporting very high lift tolerances in testing (up to ~80 kg in marketing).