When ordering a Fi Collar, the measurement listed per size includes both the Fi Collar Band and the Fi Module. The Fi Collar is lightweight and can comfortably fit dogs with neck circumferences of 9.75" and up for Fi Series 3 Collars.
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Steps to Choose the Right Size Fi Collar
Option 1
Measure your dog’s existing collar length by laying your dog’s existing, best fitting collar flat and measuring it in inches.
- Best fitting collars allow you to fit two fingers between your dog’s neck and collar. See the “Two Fingers” Rule below.
- If you don’t have a measuring tape, try Google’s Measure - Quick Everyday Measurements app or the iOS Measure app.
Option 2
Loosely measure the circumference of your dog’s neck using a cloth tape measure, in inches, around the normal location the collar would sit.
- If you don't have cloth measuring tape, you can use a piece of string or ribbon, then measure length of the cloth with a ruler or measuring tape after marking where the collar buckle should sit.
- To ensure the collar isn’t too tight, you’ll need to add one to three inches (depending upon your dog’s size) to this measurement to find the correct length collar.
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Sizing Chart Fi Series 3 Collar
For Fi Series 3 Collars, the band length and width vary depending on the size ordered. All measurements shown are the circumference of the collar with the buckle clasped together. The buckle for sizes Extra Small - Medium is plastic, where the buckle for Large & Extra Large is metal.
|
Collar Band |
Collar Length |
Collar Width |
Suggested Breeds |
|
Extra Small |
9.75" - 11" |
3/4" |
Dachshund (miniature), Maltese, Pomeranian, Toy Poodle, Yorkshire Terrier, etc. |
|
Small |
10.5" - 12.5" |
3/4" |
Boston Terrier, Cairn Terrier, Cavalier King Charles, Dachshund, French Bulldog, Jack Russell Terrier, Mini Aussie, Pug, etc. |
|
Medium |
12.25" - 15.5" |
1" |
Aussie, Beagle, Border Collie, Corgi, English Bulldog, etc. |
|
Large |
14.75" - 20.5" |
1" |
Boxer, Doberman, German Shepherd, Golden Retriever, Labrador Retriever, Pit Bull, Siberian Husky, Standard Poodle, etc. |
|
Extra Large |
19.75" - 30.5" |
1" |
Bloodhound, Great Dane, Great Pyrenees, Mastiff, Newfoundland, Rottweiler, etc. |
* Recommendations based on average breed sizes. All dogs may vary. Measure your dog's existing collar length for the most accurate size estimate. See below.
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Sizing Chart Fi Series 2 Collar
For Fi Series 2 Collars, the band length varies depending on the size ordered, but all band widths are 1 inch. All measurements shown are the circumference of the collar with the buckle clasped together. The buckle for size Small is plastic, where the buckle for Medium - Exrta Large is metal.
|
Collar Band Size |
Collar Length |
Suggested Breeds |
|
Small |
11.5" - 13.5" |
Cavalier King Charles, Pekingese, Miniature Schnauzer, French Bulldog, Pug, Scottish Terrier |
|
Medium |
13" - 16.5" |
American Pit Bull Terrier, Basenji, Beagle, Bedlington Terrier, Bichon Frise, Border Collie, Border Terrier, Boston Terrier, Brittany, Bull Terrier, Cairn Terrier, Cavalier King Charles Spaniel, Cocker Spaniel, Corgi, Dachshund, Fox Terrier, Greyhound, Lhasa Apso, Standard Poodle, Pug, Saluki, Shiba Inu, Springer Spaniel, West Highland Terrier |
|
Large |
16" - 22.5" |
Afghan, Airedale, Alaskan Malamute, American Eskimo, Australian Shepard, Australian Cattle Dog, Basset Hound, Belgian Malinois, Black and Tan Coonhound, Boxer, American Bulldog, English Bulldog, Chow, Collie, Standard, Dalmatian, Doberman, German Shepherd, German Shorthaired Pointer, Golden Retriever, Irish Setter, Irish Wolfhound, Labrador Retriever, Labradoodle, Old English Sheepdog, Portuguese Water Dog, Rhodesian Ridgeback, Standard Schnauzer, Shar Pei, Siberian Husky, Staffordshire Terrier, Vizsla, Weimaraner, Wheaten Terrier |
|
Extra Large |
22" - 34.5" |
Akita, Bernese Mountain Dog, Bloodhound, Bullmastiff, Cane Corso, Dogo Argentino, English Mastiff, Great Dane, Great Pyrenees, Newfoundland, Rottweiler, St. Bernard |
* Recommendations based on average breed sizes. All dogs may vary. Measure your dog's existing collar length for the most accurate size estimate. See below.
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Tips & Tricks
The “Two Fingers” Rule:
- Once your dog’s Fi Collar is fastened, you should easily be able to slide the width of your two fingers under the collar.
- When you slide the width of your two fingers between the collar and neck, the collar should feel snug, but not tight.
- You should not be able to slide your dog’s collar off their head. This could lead to your dog's head slipping through the collar.