CHEW PROOF RESTRAINT:Our dog seat belt is made out of heavy duty plastic coated stainless steel rope, the same material used in dog tie-outs.it is indestructible and durable. ATTACHES TO SAFETY LATCH BAR:with double bull snap leashes,our seat belt can attaches to dog harness and your car's latch bar instead of clipping into a regular seatbelt.in this way,it will be more convenient and safety.you can find these latch bar in the seat creases in your cars back seat. PREVENTS DISTRACTIONS AND AVOIDS DANGER:has a tested tensile strength of 200 lbsCan restrain your dog's active space in the car,allowing your dog to freely sit,stand and lay down without distracting MUTI-APPLICATION:not only can be used in your car as Safety Seatbelt Leash for dog,but also can be used as double leash or jogging leash for men or women