Sizing & Measuring

Size Chart: 

Size Neck (Inches)

Recommended Thickness

Approx. Weight  (Lbs) Breed Examples
XSmall Up to 11"

Collar: 1/2"

Leash: 1/2" 

Up to 20lbs Yorkshire Terrier, Miniature Pinscher, Chihuahua
Small 11"-14"

Collar: 1/2" or 3/4"

Leash: 1/2" 

20 - 50lbs  Boston Terrier, Pug, Cocker Spaniel 
Medium 14”-17"

Collar:  3/4" or 1" 

Leash: 1/2" or 3/4" 

50 - 70lbs Corgi, Boxer, Border Collie, Poodle
Large 17"-20"

Collar:  1" or 1.5"

Leash:  3/4" 

70 - 100lbs German Shepherd, Doberman, Retriever, 
Staffordshire Bull Terrier
XLarge 20-23"

Collar:  1" - 1.5"

Leash:  3/4" 

100 - 130lbs  Great Dane, Cane Corso, Rottweiler
XXLarge Over 23"

Collar:  1" - 1.5"

Leash:  3/4" 

Over 130lbs Saint Bernard, Bernese Mountain Dog, 
Bull Mastiff


*Measure neck to guarantee proper fit; instructions for measuring your dog's neck and/or current collar can be found below.

*Dog breeds are for illustration purposes only; they may or may not be the appropriate size for your dog.



Dogs, like people, are all unique and come in a variety of sizes and shapes. Here are a few steps to ensure that appropriate measurements are gathered and that the perfect collar is created:

Measuring your Dogs Neck:

  1. Measure a few inches behind his head and add an inch for extremely small dogs or two inches for medium and large dogs. (#1)
  2. Make a snug but not too tight fit with a tape measure. (If you don't have a tape measure, use a piece of string and a firm ruler to measure the string.)

How to Measure Your Dogs Neck - Youtube Video


Measuring your Dogs Current Collar:  

  1. Remove your dog's existing collar and lay it flat.
  2. Take a measurement from the buckle's centre to the present sizing hole or adjustment.


Collar Fit:

  1. You should be able to slide two fingers under a correctly fitting collar and your dog's neck when it's on his neck. If there is extra room, go down a size. The collar is too small if both fingers don't fit.

* If you're ordering a Martingale or a Slip collar, make sure you measure at point #2 in the image above as well to ensure the size you choose fits within the range of these two measures.

* If you're ordering a Dominant Dog Collar or ECollar Strap, make sure you measure at point #2 

Harness Sizing:



X Small









Neck Measurement

8 - 12”

10 - 16”

14” - 20"

18" - 24"

Girth Measurement

12 - 18”

16 - 22”

18 - 28” 

24 - 34”

Approx. Dog Weight

Up to 15lbs

15 - 30lbs

30 - 60lbs

60lbs - 90lbs