Flynn Harness Size Guide
Find your fit. All measurements are in centimetres unless stated otherwise.
| Size | Neck + chest circumference (cm) | Strap width (cm) | Breed examples |
|---|---|---|---|
| XXS | 65 - 74 | 1.5 | Miniature Dachshund, Maltese |
| XS | 77 - 86 | 1.9 | Jack Russell Terrier, Miniature Schnauzer |
| S | 89 - 98 | 1.9 | Beagle, Cocker Spaniel |
| M | 101 - 110 | 2.4 | Border Collie, Australian Shepherd |
| L | 113 - 125 | 2.4 | Golden Retriever, Labrador Retriever |
| XL | 127 - 139 | 3.1 | German Shepherd, larger Labrador Retriever |
| XXL | 141 - 153 | 3.1 | Bernese Mountain Dog, Rottweiler |
How to measure
A: Measure around the base of the neck. B: Measure around the widest part of the chest, just behind the front legs. Allow room for two fingers under the tape at each point. Add A + B and compare the total with the chart. This is a combined measurement, not chest circumference alone. If your total falls in a gap between the listed ranges, contact us for sizing advice.
Breed examples are a guide only. Build, age and coat density can affect fit. Always choose using your dog’s actual measurements.
For older models, see the Flynn Archive size guide.