Choosing the correct harness size is important for your dog’s comfort, safety and freedom of movement. A harness that is too tight may restrict movement or cause rubbing, while a loose harness can shift around or allow your dog to slip out.
TacSource stocks a wide range of tactical dog gear, including collars, leashes, pouches and accessories for everyday walks, training, working dogs and outdoor use. We also offer a dedicated range of dog harnesses designed for different activities and dog sizes.
One of our most popular options is the OneTigris AIRE Mesh Dog Harness. Before selecting a size, measure your dog’s neck, chest and back, then compare the measurements with the sizing chart on the product page.
What Measurements Do You Need?
For the most accurate fit, take three key measurements while your dog is standing naturally.
1. Neck Girth
Measure around the lower part of your dog’s neck, close to where the neck meets the shoulders. This is generally lower than where a standard collar sits.
Keep the measuring tape snug, but do not pull it tightly against your dog.
2. Chest Girth
Measure around the widest part of your dog’s chest, usually just behind the front legs.
Chest girth is often the most important harness measurement. Keep the tape level around your dog’s body and make sure it is not twisted.
3. Back Length
Measure along the top of your dog’s back, starting at the base of the neck and finishing where the harness will end.
Measure in a straight line rather than following the full curve of your dog’s back.
Tips for Measuring Your Dog
- Use a flexible fabric measuring tape.
- Measure your dog while they are standing naturally.
- Keep the tape snug without pulling it tight.
- Allow enough room to fit approximately two fingers beneath the tape.
- Do not choose a harness based only on your dog’s breed or weight.
Dogs of the same breed can have very different neck, chest and body measurements. Once you have all three measurements, compare them with the size chart provided on the harness product page.
Choosing the Right Harness Size
If your dog falls between two sizes, pay particular attention to the chest measurement. You should also consider your dog’s coat thickness, body shape and whether they are still growing.
After fitting the harness, check that it remains centred, does not rub behind the front legs and allows your dog to walk, sit and lie down comfortably.
Shop Tactical Dog Harnesses at TacSource
Whether you need a harness for everyday walking, training, hiking or working-dog applications, explore the complete TacSource range of dog harnesses and tactical dog gear.
For a popular breathable option, view the OneTigris AIRE Mesh Dog Harness and check the product sizing chart before ordering.
For additional guidance, watch this video explaining how to measure your dog for a harness.
