The Pet Life Road-To-Safety Dog Harness comes with a detachable swivle hook leash which clips into the inside of any car seat. Works on any and all front or back seats car models. The car leash holder is extendable. Keep you pet securely fastened in your car while you drive, great when added to any sized car seat cover. Connects to the included car seat safety harness composed of Neoprene and heavy duty seat belt-like Oxford Nylon with Dual-Reinforced stitching at every seam. The harness is adjustable and easy slips on with Velco enclosures and protects the chest and sternum areas while preventing any stress placed on the neck area. Pet safety is an overlooked priority and we try to do our best to help bring more awareness to owners! Available in Multiple Sizes.SIZING DIMENSIONS: (INCHES) - Back of Next to Tail areaXS: HARNESS: 16 - 19 In. LEASH: 11.8 - 15.7 In SM: HARNESS: 19 - 23 In. LEASH: 11.8 - 15.7 InMD: HARNESS: 23 - 28 In. LEASH: 11.8 - 15.7 InLG: HARNESS: 28 - 36 In. LEASH: 11.8 - 15.7 In Pet Intended For: Dog Measurements: 4 Length/Inches, 5 Height/Inches, 6 Width/Inches Base Material: 100% Nylon Care: Wipe Clean Country of Origin: Imported