Size Guide - Jackets
In-Stock Jacket Size Chart
Wag Theory jacket sizes are categorized first by length.
There are three important measurements that ensure proper fit: length, neck, and chest. The dog measurements listed below are based on the ideal fit for each jacket size. If your pup does not fit into the range of measurements below, you may want to consider ordering a custom jacket.
| Size |
Length |
Neck |
Chest |
| Small - 12 |
12 in |
9-11 in | 14-19 in |
| Small - 14 | 14 in | 10-12 in | 15-20 in |
| Medium - 16 | 16 in | 11-14 in | 18-25 in |
| Medium - 19 | 19 in | 13-16 in | 19-28 in |
| Medium - 22 | 22 in | 16-19 in | 20-32 in |
| Large - 25 | 25 in | 18-21 in | 26- 34 in |
| Large - 27 | 27 in | 20-23 in | 28-38 in |
Measuring your Dog
It is highly recommended that you measure your dog before choosing a size. If you need further assistance, check out our Measurement Guidance page.
Image Gallery
Check out the Jacket Gallery to see what the jacket sizes look like on a variety of dogs.
Size by Average Breed
Breed sizing varies widely, so we strongly recommend measuring your pup to get the most accurate fit. This chart provides general guidance on Wag Theory sizing compared to an average breed type as a place to start, but please understand that some breeds span multiple size ranges or require custom sizing regardless.
| Breed | Average Size |
| Akita | 25 |
| Alaskan Malamute | 27 |
| Australian Cattle Dog | Custom |
| Australian Shepherd | 22 |
| Basenji | Custom |
| Basset Hound | 25 |
| Beagle | 16 |
| Belgian Malinois | 25 |
| Bernese Mountain Dog | 27 |
| Bichon Frise | 14 |
| Border Collie | 22 |
| Boston Terrier | 14 |
| Boxer | 22 |
| Bulldog (English) | Custom |
| Bulldog (French) | Custom |
| Bullmastiff | Custom |
| Bull Terrier | 19 |
| Cairn Terrier | 16 |
| Cane Corso | Custom |
| Cavalier King Charles Spaniel | 14 |
| Chihuahua | 12 |
| Chinese Crested | Custom |
| Chow | 25 |
| Cocker Spaniel | 16 |
| Collie | 22 |
| Dachshund (Mini) | 12 |
| Dachshund (Standard) | 16 |
| Dalmatian | 22 |
| Doberman Pinscher | Custom |
| Doodle (Mini) | 14 |
| Doodle (Small) | 16 |
| Doodle (Medium) | 19/22 |
| Doodle (Standard) | 25 |
| English Mastiff | Custom |
| German Shepherd | 25 |
| German Shorthair Pointer | Custom |
| Golden Retriever | 25/27 |
| Great Dane | Custom |
| Great Pyrenees | 27/Custom |
| Greyhound | Custom |
| Greyhound (Italian) | Custom |
| Havanese | 12 |
| Irish Setter | 25 |
| Irish Wolfhound | Custom |
| Jack Russell Terrier | 14 |
| Labrador Retriever | 25 |
| Maltese | 12 |
| Newfoundland | Custom |
| Papillon | 12 |
| Pembroke Welsh Corgi | 19/Custom |
| Pinscher (Mini) | Custom |
| Pit Bull | 22 |
| Pomeranian | 12 |
| Poodle (Standard) | 25/Custom |
| Poodle (Mini) | 14 |
| Pug | Custom |
| Puggle | Custom |
| Rat Terrier | 14 |
| Rhodesian Ridgeback | 25 |
| Rottweiler | Custom |
| Schnauzer (Mini) | 16 |
| Shar Pei | 19 |
| Shiba Inu | 19 |
| Shih Tzu | 14 |
| Siberian Husky | 27 |
| Springer Spaniel | 19 |
| Staffordshire Terrier | 15 |
| Vizsla | 22 |
| Weimaraner | 22 |
| West Highland Terrier | 16 |
| Wheaten Terrier | 19 |
| Whippet | Custom |
| Yorkshire Terrier | 12 |