How to Measure Your Dog for a Harness: A Step-by-Step Guide to a Perfect Fit

Quick Answer

To measure your dog for a harness, use a soft tape measure and take two key measurements: the neck circumference (the widest part, just above the shoulders) and the chest circumference (the widest part, right behind the front legs). For the best fit, check the harness size chart and test it on your dog, ensuring you can fit two fingers snugly under the straps.

A properly fitted harness makes walks more comfortable for your dog and gives you better control. But with so many sizes and styles, finding the right one can be tricky. If you've ever wondered whether you need a small, medium, or large, this measuring guide will help you get it right the first time.

Whether you're eyeing the Comfort Walk Air™ harness or the Comfort Walk Pro™ harness, the key to a perfect fit is accurate measurements. In this guide, we'll walk you through step-by-step how to measure your dog and check the fit, so you can both enjoy stress-free walks.

Why Accurate Measurements Matter

A harness that's too tight can rub and chafe, while one that's too loose can slip off or allow your dog to pull free. By taking accurate measurements, you ensure your dog's comfort, safety, and control. The right fit also distributes pressure evenly across the chest, preventing strain on the neck.

Different harness designs have different sizing considerations. For example, the Comfort Walk Air™ harness is an easy-to-fit everyday harness, while the Comfort Walk Pro™ harness has an easy-grab handle and two leash attachment points. Both require a snug but comfortable fit to work as intended.

• Always measure your dog while they are standing, not sitting, to get accurate dimensions.

Step 1: Gather the Right Tools

All you need is a soft, flexible tape measure (like those used for sewing) and a notepad or your phone to note the measurements. A soft tape conforms to your dog's body, giving you a more accurate reading than a rigid ruler or measuring tape.

• If you don't have a soft tape measure, use a piece of string, wrap it around your dog, then measure the string against a straight ruler.

Step 2: Measure the Neck Circumference

Place the tape measure around the widest part of your dog's neck, just above the shoulders where the collar normally sits. Keep it snug but not tight—you should be able to insert one finger between the tape and your dog's neck. Note the measurement in inches or centimeters.

This measurement is critical for a harness with a neck strap that opens and closes, like the Comfort Walk Air™ harness. Its easy-to-use aluminum fitting allows the neck-strap to open, which is convenient for dogs that don't like a harness pulled over their heads.

• Stand behind your dog and view the tape at eye level to ensure it's level and not twisted.

Step 3: Measure the Chest Circumference

The chest is the widest part, just behind the front legs. Wrap the tape around your dog, passing just behind the armpits. Keep the tape snug but not tight, and ensure it's not pinching. This measurement is the key to getting a secure fit that won't slip off.

The chest measurement takes into account your dog's girth, which is essential for harnesses like the Comfort Walk Pro™, which features a chest strap and a back attachment. A well-fitted chest strap also ensures the front clip option works properly for training and control.

• Don't be tempted to add a few inches 'for comfort'—use the exact measurement and then consult the size chart.

Step 4: Compare with the Size Chart

Each harness brand has its own sizing chart. Always refer to the specific brand's chart, as sizes can vary. When you have your dog's neck and chest measurements, compare them with the harness's size guide. If your dog falls between sizes, consider the larger size for a more comfortable fit, especially if your dog is still growing or has a thick coat.

For example, both the Comfort Walk Air™ and Comfort Walk Pro™ come in multiple sizes, and the manufacturer's charts are the best guide. If you're unsure, consider how the harness's features—like easy-grab handles or front clips—might affect fit on your dog's specific body shape.

• Write down your dog's measurements and keep them in your phone for easy reference when shopping.

Step 5: Test the Fit on Your Dog

Once the harness arrives, put it on your dog. Adjust the straps so it's snug but not restrictive. You should be able to fit two fingers flat between the harness and your dog's body, both at the neck and chest. Check that the harness sits high on the chest, not interfering with the armpits.

For the Comfort Walk Pro™, also test the two leash attachment points: the back clip for everyday walks and the chest clip for more control. Make sure the harness doesn't shift or rub as your dog walks, and check for any signs of chafing after a short walk.

• Let your dog wear the harness around the house for a few minutes before heading out, to ensure they're comfortable and it stays put.

Step-by-Step Fitting Checklist

1. Measure neck and chest: Use a soft tape measure to take the neck circumference just above the shoulders and the chest circumference behind the front legs. Record both numbers. Checkpoint: Measurements should be snug but not tight.
2. Check the size chart: Refer to the brand's size chart and pick the size that matches both measurements. If between sizes, choose the larger size for comfort. Checkpoint: Don't rely on weight alone; measurements are key.
3. Put on and adjust: Loosen all straps, put the harness on, and adjust each strap evenly. Ensure the harness sits behind the shoulders and doesn't rub the armpits. Checkpoint: You should be able to fit two fingers under any strap.
4. Test the fit in action: Take a short walk and watch for shifting, chafing, or signs of discomfort. If needed, fine-tune the strap adjustments. Takeaway: A well-fitted harness shouldn't impede movement or cause rubbing.

Harnesses to Consider

• Comfort Walk Air™ Harness: The Comfort Walk Air™ harness from DOG Copenhagen is a strong and lightweight everyday harness made of durable stain and water-resistant materials with soft breathable padding. The harness is easy to fit and put on and comfortable for the dog to wear during any level of exercise. The easy to use aluminum fitting allows you to open/close the neck-strap - convenient for dogs that prefer not to have a harness pulled... The easy-to-fit neck strap makes it a great choice for dogs that dislike having a harness pulled over their heads. Lightweight and breathable, it's suitable for daily use and exercise.
• Comfort Walk Pro™ Harness: The Comfort Walk Pro™ Harness from DOG Copenhagen is a strong and lightweight everyday harness made of durable stain and water-resistant materials with soft breathable padding. The harness is easy to fit and put on and comfortable for the dog to wear during any level of exercise. The easy-grab handle and two leash attachment options, one on the dog's back for everyday walks and one on the dog’s chest, provides... With both back and chest leash attachments and an easy-grab handle, this harness offers extra control and options for training or unpredictable situations.

Measuring your dog for a harness doesn't have to be complicated. With these simple steps, you'll get a comfortable, secure fit that keeps your dog happy and you in control. Whether you choose the Comfort Walk Air™ for easy fitting or the Comfort Walk Pro™ for extra features, the right fit makes all the difference.