Find the right fit in 2 minutes
Size the harness by your dog's chest, not their weight. All you need is a soft tape measure (or a piece of string and a ruler).
Size chart
| Size | Chest (cm) | Chest (inches) | Usually fits |
|---|---|---|---|
| S | 43–56 cm | 17–22 in | Pug, Shih Tzu, Jack Russell, DachshundSmall dogs |
| M | 56–66 cm | 22–26 in | Beagle, French Bulldog, Cocker SpanielSmall to medium dogs |
| L | 66–82 cm | 26–32 in | Border Collie, Staffy, HuskyMedium to large dogs |
| XL | 81–96 cm | 32–38 in | Labrador, Golden Retriever, German ShepherdLarge dogs |
| 2XL | 94–107 cm | 37–42 in | Rottweiler, Bernese Mountain Dog, large ShepherdsExtra large dogs |
Ranges are approximate: every harness is adjustable within its size, and breeds vary a lot. Always go by your tape measure, not the breed. If your number sits on the edge of two sizes, message us before you order and we'll tell you which one to pick.
How to measure
- Measure the chestWrap the tape around the widest part of the ribcage, about two fingers behind the front legs. This is the number that decides the size.
- Keep it snug, not tightThe tape should lie flat against the fur. Your dog should stand, not sit.
- Match it to the chartFind the size whose chest range includes your number. Between two sizes, or still growing? Choose the bigger one: the straps adjust down.
- Check the fit on arrivalYou should slide two flat fingers under every strap. Nothing should sit tight on the throat or rub behind the front legs.
Go up one size. A slightly bigger harness adjusts down; a small one can't adjust up.
Greyhounds, Whippets and Boxers: size by the chest and tighten the belly strap.
Choose the size that fits now with room to grow, and re-check the fit every few weeks.
Email us your dog's chest measurement and breed and we'll reply within one business day. Wrong size after all? We send the right one free.