Best harness upgrade from Julius K9 for GSDs

So the Julius K9 has done its time — those velcro patches do wear smooth eventually, especially on a dog that's been wearing it daily for years. Before I point you toward the best upgrade, tell me a bit more: how strong is your GSD pulling these days, do you mostly walk on-lead or does the harness double as a working or activity vest, and are you happy with the back-clip setup or open to a front-clip or dual-clip option?

That's really helpful. If the patch system was unused, you don't need to replace like-for-like — and honestly for a strong 35kg puller, a front-clip harness will give you far better control than the Julius K9's back clip ever did. What's the Julius K9 size he's been in — IDC 3 or 4? Just want to make sure we're thinking about the right fit range for the upgrade.

Perfect — that puts him squarely in the Ruffwear Front Range Harness large size, and that's exactly what I'd recommend here. It has a front clip on the chest and a back clip on the top, so you can use whichever suits the walk. The webbing is reinforced nylon — significantly more durable than velcro-based closures — and the four adjustment points mean you can dial in a precise fit on a deep-chested GSD without it shifting or twisting. The aluminium hardware holds up well to a strong dog. For a 70cm chest it'll fit comfortably in a large. It's available on Amazon UK and usually ships quickly. One thing worth knowing: measure his chest again before you order, as GSD coats can make sizing trickier than the number suggests.

The front clip makes a real practical difference — when he pulls forward, the attachment point turns him back toward you rather than letting him lean into it like a sled dog. It doesn't train him out of pulling on its own, but it gives you mechanical control that a back clip simply can't. If the pulling is mostly reactive — other dogs triggering it — the harness change will help you manage it in the moment, and it pairs well with some loose-lead work if you want to address the root habit too. But plenty of owners find the front clip alone is enough to make walks manageable again.

Yes — it goes on over the head and clips under the belly with a single buckle, so it's a similar routine to the Julius K9 once your dog is comfortable with the head-through motion. Most dogs adapt within a few days. The one adjustment is that the four points do take a session or two to get set perfectly, but once they're right you don't need to touch them again. It's a solid long-term harness for a dog his age and size.