These are actually working dog harnesses. I understand people's concern as many have never heard or seen these that’s why I am showcasing what I do here. And what I’m harnessing the dogs up to do is called DogMotoSports which I’ve pioneered and it’s based off of the K9 Sport Roading. You see these sports are designed for a kind of a resistance type training. So the dogs are not truly pulling but they are pushing as this harness provides them the design to properly lean into and safely & comfortably push against it. The Roading harness maximizes their pushing power as they are tethered on a relatively short line to avoid them from pulling as it purposely limits their range of motion so they can’t get the leverage to pull. I also run the dogs on bikes different than bikejoring as they are on springers on the side of the bike which this Roading harness works well for also. For true bikejoring and more pulling sports I wouldn’t recommend this harness. A true sled dog pulling harness would be much more appropriate like an xback. The xback and other specific sled dog harness are designed for dogs to get more range of motion and more leverage so they can engage their whole body for faster speeds and more pulling capacity as this Roading harness does not offer those capabilities. PLEASE CLICK HERE TO LEARN MORE ABOUT DOG ROADING HARNESSES