These two pet belts are anchored up on the headrests and lower the fastening strap from above to the back of the pet to anchor the dog's harness, avoiding that they trip over the legs with which they come out from below the base of the seat where people's belts are anchored. I have both models, the latter when descending from above, pets can move without the risk of their legs stumbling, much more comfortable for our pets. Price/quality very well, graceful seller👍