Fit before the trail
A good harness should stay stable without pinching or restricting movement. Measure the chest first, then use weight and breed only as secondary clues.
Enter a chest measurement for a quick starting recommendation. Confirm the fit against the full chart before ordering.
Measure around the widest part of the chest, just behind the front legs

Use a soft measuring tape to measure around the widest part of your dog's chest, just behind the front legs. This is the most important measurement for harness fit.

Weigh your dog to cross-reference with the size chart. Weight alone isn't enough to determine size, but it helps confirm you're in the right range.
The numbers that matter
Chest measurement is the best way to choose. Breed examples below are only a quick starting point because dogs of the same breed can have different builds.
| Size | Chest | Neck | Approx. weight | Common starting point |
|---|---|---|---|---|
| XS | 33–43 cm | 25.5–38 cm | 2–5 kg | Chihuahua, Yorkie, toy breeds |
| S | 43–56 cm | 31.5–50 cm | 4–7 kg | Jack Russell, small Pug, Mini Dachshund |
| M | 56–69 cm | 32.5–52 cm | 7–18 kg | Beagle, Cocker Spaniel, smaller Border Collie |
| L | 69–81 cm | 39.5–56.5 cm | 18–30 kg | Labrador, Golden Retriever, Husky |
| XL | 81–107 cm | 45–77 cm | 30–50 kg | German Shepherd, Rottweiler, large breeds |
Wrap a soft tape around the chest just behind the front legs.
The tape should be snug, not tight, and parallel to the ground.
You should be able to slide two fingers beneath the straps once adjusted.