PetSafe Easy Walk Harness PERFECT FIT GUARANTEE: Need a different size? No problem! Contact PetSafe Customer Care at 1-800-845-3274 and well be happy to help you select the right size for your dog MEASUREMENT INFO: When measuring, have your dog stand to make sure the sizing will be correct; our video provides info on how to measure your dog's width and girth for the Easy Walk Harness. Material nylon MORE INFO: Harness sizing is based on chest width and girth measurements, not weight; if your dogs measurements fall between two sizes, choose the larger size ADJUSTABLE FIT: Four adjustment points allow you to fit the harness to your dogs unique shape while the belly straps complimentary color helps make it easy to know which straps go on top and bottom DETERS OPPOSITION REFLEX: Unlike traditional dog harnesses, the front leash attachment of the Easy Walk Harness steers your dog to your side to reduce or stop leash pulling DOES NOT CHOKE: The straps of the Easy Walk Harness rest along your dogs chest and belly-not the delicate throat area-which means no more gagging or choking when your pet tries to pull EASY REPLACEMENTS: If you experience rips or tears in your harness from chewing or scratching, contact PetSafe Brand's US-based Customer Care at 1-800-845-3274 and a replacement can be sent for a nominal fee