How to Measure Your Dog for a Coat or Jacket (So It Actually Fits)

The single biggest reason a dog coat or jacket gets returned isn't the design — it's the size. Because sizing isn't standardised across brands, the safest approach is always to measure your dog directly rather than guess from breed alone.

The three measurements you need

• Neck: Measure around the base of the neck, where a collar would normally sit. Keep the tape snug but not tight.
• Chest: Measure around the widest part of the chest, just behind the front legs. This is usually the measurement that determines fit most.
• Back length: Measure from the base of the neck (where the collar sits) to the base of the tail, along the spine.

Write all three down in centimetres. Most of our product pages include a size chart with these exact measurements for that specific item — always check the chart on the product you're looking at rather than relying on a general 'S/M/L' guess, since fit varies between a fitted jacket, a loose fleece pullover, and a wrap-style coat.

What to do if your dog is between sizes

If your dog's measurements fall between two sizes, sizing up is usually the safer choice — a slightly looser coat is more comfortable than one that restricts shoulder movement or rubs at the chest. Dogs with a deep chest or broad shoulders (many working and sporting breeds) sometimes need a size up from what their neck measurement alone would suggest.

A quick fit check once it arrives

Once the coat is on, you should be able to fit two fingers flat under the neck and chest straps. Your dog should be able to walk, sit and lie down normally without the coat pulling across the shoulders.

Browse our current coats and jackets — each product page includes sizing details for that specific style.