
Dog Harness vs Collar: Which Should You Walk On?
Short version: walk on a harness, keep the collar for the ID tag. The exceptions are narrower than most people think.
8 min read
A double-pin buckle that will not creep loose.
Width and padding are what stop a collar digging in. At four and a half centimetres the load spreads across the neck instead of concentrating on a narrow band, which matters on a dog that pulls.
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Colour: Black
Size: M
Why you'll love it
A narrow collar concentrates a pulling dog's whole weight on a couple of centimetres of throat. At 4.5 cm the same force spreads across four times the area.
Two prongs through two rows of eyelets is a belt buckle, not a friction clamp. A dog that backs out of quick-release collars will not back out of this.
The Velcro panel takes a patch, which is legible from further away than an engraved tag and does not jingle.
Good fit if
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Force through a collar is concentrated over whatever area the collar covers. A narrow strap puts the whole of a lunge into a band a centimetre or so wide, which is why thin collars mark the coat and dig into the skin underneath on dogs that pull. Widening the strap spreads the same force over three or four times the area.
The padded lining does the rest. Bare nylon webbing under load abrades, and on a short-coated dog that shows up as a worn line around the neck within a few months. A padded inner face distributes pressure and stops the edge of the webbing cutting in when the dog turns hard against it.
Most collar problems are buckle problems. A single-prong buckle on a heavily loaded collar can creep, and a plastic side-release buckle fatigues invisibly and then fails all at once, usually while the dog is lunging at something across a road. Neither gives any warning.
A two-prong metal buckle spreads the load across two points and does not creep, because both prongs have to move for the setting to change. Metal also fails gradually rather than suddenly. It is slower to fasten than a side-release clip, which is the honest trade-off, and it is the right one on a dog strong enough to test the hardware.
A heavy welded D-ring matters as much as the buckle. Lighter rings can open under a sustained pull, particularly the ones formed from bent wire rather than welded closed, and a ring that opens releases the lead entirely. Check yours is welded and sits flat against the webbing rather than twisting.
The velcro panel takes a name or ID patch, which is worth using alongside rather than instead of a tag. In the UK a dog in a public place must legally wear a tag showing the owner's name and address, and a microchip does not satisfy that requirement. A patch is a useful addition for visibility, not a replacement.
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The details
| Size | Neck | Typical dogs |
|---|---|---|
| M | 37–47 cm | Border Collie, Springer Spaniel, medium crossbreeds |
| L | 45–55 cm | Labrador, Boxer, German Shepherd |
| XL | 53–63 cm | Rottweiler, Great Dane, mastiff types |
Measure around the neck where the collar sits, then add room for two fingers flat underneath. Five adjustment points cover the range within each size, so aim for the middle hole rather than either extreme.
Good questions
No. This is the collar on its own. The D-ring takes any standard trigger clip.
Measure the neck with a tape where the collar will sit and add two fingers' width. M covers 37–47 cm, L covers 45–55 cm and XL covers 53–63 cm, so most dogs sit comfortably inside one band.
The webbing and buckle are, but no collar is the right anchor for a hard lunger. Clip the lead to a harness and let the collar carry the ID.
No, this is the collar only. Any standard clip lead attaches to the D-ring.
Measure the neck where the collar will sit, then check that figure against the table and choose the size that puts you near the middle of its range rather than at one end.
The hardware is, being metal throughout with a welded ring. Whether a collar is the right tool for a lunging dog is a separate question, and usually the answer is a front-clip harness.
Last reviewed August 30, 2026
Advice

Short version: walk on a harness, keep the collar for the ID tag. The exceptions are narrower than most people think.
8 min read