Use a soft tape to measure around the widest part of your dog's chest, a little behind the front legs so it doesn't sit in the armpits.

Once you have the measurement, check the size chart to see which range your dog falls into.

Between sizes? We generally recommend choosing the larger one. The webbing shrinks about 7% over time, and the extra room also helps with a winter coat or a bit of weight gain.

Deep-chested dog? Sizes XXS to M also come in a long version (XXSL, XSL, SL, ML). The longer back and chest straps keep the belly strap away from the armpits, so it doesn't rub.

The breeds in the chart are only a rough guide, since dogs of the same breed can vary a lot.

Still unsure? Message us and we'll help you pick!