Very easy to install on the belt. It is easy to assemble and disassemble. You can attach directly to the harness and collar of the dog/cat, you can attach to a leash if you carte for a larger space. The clasp is very solid, it will not detach itself. Keeps your dog/cat in place even when braking suddenly. This helps drive safely and reduce the risk of injuries for pets. Easy to Use: Above the product through the seat belt. Gently use a finger pressure to open it, buckle in the dog collar or harness. Suitable for All Kinds of Car Seat Belts, and can attach to the ring of various pet harnesses, and collar. Made with lightweight and durable Aluminium-alloy, the universal adapter fits all standard seat belts and pet harnesses,collar in the market.