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.
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.
Between sizes? Size up. Every collar adjusts within its range.
How to measure
- 1Use a soft tape measure, or a piece of string and a ruler.
- 2Wrap it around the neck where the collar naturally sits, just below the ears.
- 3Add two finger widths so it's snug, not tight. That's your number.
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.
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.
Between sizes? Size up. Each harness adjusts within its range at the chest and neck.
How to measure
- 1Stand your dog up. Chest is measured standing, not lying down.
- 2Wrap a soft tape around the ribcage right behind the front legs, at the deepest point.
- 3Add two finger widths so the harness is snug, not tight. That's your chest number.
- 4Check the neck too: the harness neck opening should slide over the head without forcing.
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.