Find their fit

Collar size guide

A good fit is snug but never tight. You should be able to slide two fingers between the collar and your dog's neck.

Quick answer

What's your dog's neck measurement?

Measure where the collar sits and add two fingers.

Type a measurement and we'll show the size to order.

Your size
Small
8–11 in neck
1/2" width
Chihuahua, Yorkie, Toy Poodle
Your size
Medium
11–14 in neck
5/8" width
Pug, French Bulldog, Mini Dachshund
Your size
Large
14–18 in neck
1" width
Beagle, Border Collie, Cocker Spaniel
Your size
XL
18–22 in neck
1" width
Labrador, Golden Retriever, Husky
Your size
XXL
22–28 in neck
1 1/2" width
Great Dane, Mastiff, Bernese

Between sizes? Size up. Every collar adjusts within its range.

Where to measure a dog's neck for a collar: just above the shoulders, with two fingers of room

How to measure

  1. 1Use a soft tape measure, or a piece of string and a ruler.
  2. 2Wrap it around the neck where the collar naturally sits, just below the ears.
  3. 3Add two finger widths so it's snug, not tight. That's your number.
Need a custom size?
Puppies grow fast. Pick the size that fits today and adjust as they grow.
Fluffy coat? Measure under the fur, close to the skin.
Strong puller? Go up a width for extra strength.
Harness fit

Harness size guide

A harness is sized by the chest, not the neck. Measure around the widest part of the ribcage, just behind the front legs, and add two fingers.

Quick answer

What's your dog's chest measurement?

Measure just behind the front legs, around the deepest part of the chest, and add two fingers.

Type a chest measurement and we'll show the harness size to order.

Your size
Small
14–18 in chest
5/8" width
Chihuahua, Yorkie, Mini Dachshund
Your size
Medium
18–23 in chest
1" width
Pug, French Bulldog, Beagle
Your size
Large
23–28 in chest
1" width
Border Collie, Cocker Spaniel, Aussie
Your size
XL
28–34 in chest
1 1/2" width
Labrador, Golden Retriever, Husky
Your size
XXL
34–42 in chest
1 1/2" width
Great Dane, Mastiff, Newfoundland

Between sizes? Size up. Each harness adjusts within its range at the chest and neck.

Where to measure a dog's chest for a harness: around the ribcage right behind the front legs, with two fingers of room

How to measure

  1. 1Stand your dog up. Chest is measured standing, not lying down.
  2. 2Wrap a soft tape around the ribcage right behind the front legs, at the deepest point.
  3. 3Add two finger widths so the harness is snug, not tight. That's your chest number.
  4. 4Check the neck too: the harness neck opening should slide over the head without forcing.
Need a custom size?
Deep-chested dogs like greyhounds and boxers often need a size up from their collar size.
Two fingers should fit under every strap. Check behind the front legs for rubbing after the first walks.
Pullers: clip the leash to the harness, keep the collar on for the ID tag.
Fit questions

Sizing FAQ

Still have questions? Contact us

My dog is between sizes. Which should I pick?

Size up. Every collar adjusts about 4 inches within its range, so the larger size will still tighten to fit while leaving room to grow.

How wide should the collar be?

Wider collars spread pressure for strong pullers and big necks. Slim collars suit small dogs and dogs with delicate throats. Our chart lists the width we recommend for each size.

What if it doesn't fit?

Send it back within 30 days and we'll adjust it for free. Puppies are welcome to trade up a size as they grow.