A medium in one harness is not a promise that another medium will fit. Start with the exact model’s chart, then use its adjustment instructions to assess the harness on your dog. This is a buying worksheet, not a hands-on product review.
Make a measurement card
Record the date, chest girth, any additional measurement requested by the manufacturer, and the units. Repeat the measurement rather than rounding it to a size you want to buy. Keep the tape placement consistent with the diagram.
For example, Ruffwear’s Front Range page uses girth for its size chart. That is a model-specific reference, not a universal chart for all harnesses. Keep a screenshot of the chart and the selected product version with your order.
| Before checkout | What to record |
|---|---|
| Exact model | Name, version, and the seller’s size label |
| Measurement | Actual number and units, not just “medium dog” |
| Adjustment | Which straps adjust and the documented range |
| Uncertain fit | Manufacturer’s advice when between sizes |
| Return conditions | Deadline, indoor try-on rules, shipping cost |
Use an indoor try-on to answer practical questions
Keep tags and packaging until the return policy allows their removal. Follow the model’s instructions to put the harness on and adjust it; do not use this checklist as a replacement for them. Ruffwear publishes a separate Front Range adjustment sheet, illustrating why the fitting instructions matter as much as the size label.
While your dog is supervised in an enclosed area, observe standing, sitting, and a few ordinary steps. Does the harness twist? Are adjustment ends left dangling? Is putting it on a struggle? If the fit looks wrong, stop and ask the manufacturer rather than adding improvised padding or attachments.
Decide what the harness is for
A walking harness and a vehicle restraint are different purchasing decisions. Do not infer suitability for lifting, restraint in a car, or another specialized use from a handle or attachment ring. Check the documented intended use.
Our decision rule: reject an uncertain fit before comparing color or pockets. If the chart matches but the shape does not, a different design may be a better next trial than another size of the same model.
Next: plan the rest of your dog travel setup.
Manufacturer references checked October 9, 2026. We have not tested the named harness.