Works like a charm! My 60-pound dog likes to take rides but I worried about him flying through the windshield if we were ever in a wreck. I'm not saying that this is strong enough to prevent that, but it's a better alternative, in my dog's case, than using the shoulder/lap belt in the back seat and feeding it through his harness... he hates that and it doesn't give him any room to move at all. This Pet Belt gives him just enough room to stand in the back seat and put his front feet on the console as he likes to do. I have an older car and the seat belts don't look like this but it works perfectly in my Kia. It seems sturdy and I just latch it to my dog's harness.The only way it could be improved is by testing it's strength and making sure that the pieces would actually hold in a wreck. I bought a dog leash that was expensive but was guaranteed to not break up to a certain amount of pull. The hardware on the guaranteed dog leash is extremely heavy-duty. I'd say this hardware is medium-duty. I just hope that this never gets put to the "breakage" test.