Quad Lock® cases feature our secure locking mechanism compatible with all Twist-and-Lock mounts, a full edge-to-edge shock-resistant cover, and a protective lining. PROTECTION / SHOCK RESISTANCEWith a tough polycarbonate core and an edge-to-edge shock-absorbing TPU outer shell, you can be confident that your Galaxy is protected every day. SLEEK DESIGNIts slim profile and soft-touch material make it perfect for everyday use. Quad Lock MAG™ cases are thinner and flatter than the original cases and come with a customizable MAG ring. QUAD LOCK MAG™Quad Lock MAG™ cases are compatible with all Quad Lock MAG™ and Quad Lock® Twist-and-Lock mounts. Quad Lock MAG™ makes mounting your phone even faster – simply position your phone and let the magnets do the rest. Both Quad Lock® cases are compatible with wireless charging* Quad Lock MAG™ is only available for selected Galaxy phones. *Compatibility with third-party wireless chargers may vary depending on device and charging model. The Samsung A series does not support wireless charging.