Spencer demonstrates how to put on a sled dog harness (standard x-back). X-back harnesses allow our dogs freedom of movement when running to prevent injury while maximizing power. There are many different brands out there not one of them is always a great fit across a large and diverse kennel. It's our job to find good fitting harnesses for every dog in the kennel regardless of brand or manufacturer. People often ask which harness is the best and my answer is always, the one that fits your dog t