A good dog harness should feel secure without restricting normal movement. With so many shapes, materials and adjustment points available, the easiest way to choose one is to start with your dog's build, walking style and the type of outings you normally do.
1. Start with the right fit
Measure around the broadest part of your dog's chest and compare that measurement with the sizing information for the harness you are considering. A harness should sit firmly enough that it cannot easily twist around the body, but it should not dig into the chest, shoulders or underarms.
As a simple check, you should normally be able to slide a couple of fingers between the straps and your dog's body. Recheck the fit after a few walks because straps can loosen slightly with use.
2. Look for useful adjustment points
Dogs of the same weight can have very different body shapes, so adjustable straps can make a big difference. Multiple adjustment points are especially useful for deep-chested dogs, growing dogs and breeds with a narrow neck or broad chest.
You can browse our dog harness collection to compare different styles and fits.
3. Think about your dog's walking style
For relaxed everyday walks, a comfortable lightweight harness may be all you need. For longer walks or more energetic dogs, you may prefer a sturdier design with a secure lead attachment and additional padding.
If you use different lead lengths for different situations, it can also help to pair the harness with the right lead. A standard lead works well for pavements and busy areas, while a long line lead can provide more freedom in suitable open spaces while keeping your dog connected to you.
4. Check where the straps sit
The front of the harness should not press directly across the throat, and the shoulder area should allow comfortable movement. Check for rubbing after the first few walks, particularly around the armpits and chest.
5. Consider visibility and practical details
Reflective details can be useful during darker mornings and evenings. Quick-release buckles can make daily use easier, while a grab handle may be useful when you need closer control for short periods.
6. Recheck the harness regularly
Dogs can gain or lose weight and young dogs can grow quickly. Check the fit regularly and inspect the straps, stitching and buckles for wear. Replace the harness if any part becomes damaged or unreliable.
Finding the right setup
The best harness is the one that fits your dog properly and suits the way you actually walk together. Explore our full Dogs collection for harnesses, leads, beds, grooming products and other everyday essentials.