Pet Coats & Jackets Sizing Guide

Pet Coats & Jackets Sizing Guide

Tailored outer layer dimensions for optimal warmth, weather protection, and mobility.


Selecting the proper fit for pet coats, insulated capes, and all-weather jackets requires accounting for natural movement and base layer garments. An outer jacket that fits snugly over bare fur may restrict shoulder movement or compress the chest when layered over a knit sweater or fleece undergarment. Always factor in layering needs and coat density prior to choosing a size.


How to Accurately Measure Your Pet

Measure your pet while they are standing upright in a natural, level stance using a flexible measuring tape:

  • Back Length: Measure along the spine from the base of the neck (where the collar rests between the shoulder blades) to the base of the tail. This ensures the jacket covers major muscle groups without hindering tail mobility.
  • Chest Girth: Measure around the widest portion of the ribcage, directly behind the front legs. Add 1–2 inches for standard comfort and natural breathing. If you plan to layer the coat over a knit sweater or fleece, add an additional 1 inch of clearance.
  • Neck Girth: Measure around the base of the neck where a collar or harness naturally sits. Ensure enough ease to slide two fingers comfortably beneath the tape.

Pet Coat & Jacket Sizing Chart

Size Back Length Chest Girth Neck Girth Recommended Breeds
XS 8" – 10" (20 – 25 cm) 11" – 14" (28 – 35 cm) 8" – 10" (20 – 25 cm) Chihuahua, Teacup breeds, Yorkshire Terrier, Kittens
S 10" – 13" (25 – 33 cm) 14" – 17" (35 – 43 cm) 10" – 12" (25 – 30 cm) Pomeranian, Toy Poodle, Maltese, Adult Cats
M 13" – 16" (33 – 41 cm) 17" – 21" (43 – 53 cm) 12" – 14" (30 – 35 cm) Pug, French Bulldog, Shih Tzu, Boston Terrier
L 16" – 20" (41 – 51 cm) 21" – 25" (53 – 63 cm) 14" – 17" (35 – 43 cm) Beagle, Cocker Spaniel, Miniature Schnauzer, Corgi
XL 20" – 24" (51 – 61 cm) 25" – 30" (63 – 76 cm) 17" – 20" (43 – 51 cm) Boxer, Border Collie, Standard Poodle, Australian Shepherd
2XL 24" – 28" (61 – 71 cm) 30" – 36" (76 – 91 cm) 20" – 24" (51 – 61 cm) Golden Retriever, Labrador Retriever, Doberman Pinscher
3XL 28" – 32" (71 – 81 cm) 36" – 42" (91 – 107 cm) 24" – 28" (61 – 71 cm) German Shepherd, Rottweiler, Bernese Mountain Dog, Great Dane

Fitting & Layering Recommendations

  • Multi-Layering Rule: If your companion frequently wears a knit hoodie, sweater, or thermal base layer underneath outerwear, select one full size larger than their bare measurements to avoid restricting chest expansion and armpit circulation.
  • Deep-Chested & Broad-Shouldered Breeds: Breeds with pronounced ribcages (such as French Bulldogs, Boxers, or Pitbulls) should always match sizing primarily to the chest girth measurement rather than back length.
  • Between Sizes: If your pet’s dimensions sit on the upper boundary of a size tier, always size up for optimal thermal insulation and comfort.

Personal Sizing Concierge

Need assistance choosing the correct outerwear cut or layering combination for your pet?
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