The Ultimate Guide to Sizing Your Dog’s Harness (Without Guessing!)

Finding the perfect outfit for your pup should feel fun—not frustrating. At Lucy & Co., we know that the right fit makes all the difference when it comes to comfort, safety, and looking totally adorable. That’s why we created easy-to-follow size guides for all of our gear, so you can skip the guessing game and get straight to strutting!

Whether you’re shopping for a reversible harness, cozy sweater, or the cutest collar on the block, here’s how to size your dog like a pro.

Why Size Matters (Yes, Even for Fashion-Forward Pups!)

Just like people, dogs come in all shapes and sizes—and so should their gear. A harness that’s too tight? Uncomfy. Too loose? Your pup might slip out mid-walk (and we all know that’s no fun). Getting the right size ensures:

  • Safety: Secure but comfy for walks and adventures.

  • Style: The perfect fit means your pup’s look is on point.

  • Happiness: Because nothing beats a tail wag in well-fitting gear.

Step 1: Measure, Don’t Guess

Sure, you might know your dog’s weight, but sizing isn’t one-size-fits-all. Breeds vary, and every pup is unique! Instead, grab a soft measuring tape (or a piece of string + ruler if you’re in a pinch).

🐾 Neck: Measure where your pup’s collar usually sits. You should be able to fit two fingers under the tape for comfort.

🐾 Chest: Measure the widest part of your dog’s chest, right behind their front legs. Again, add a little wiggle room—you want a snug but comfy fit.

 

Step 2: Check the Lucy & Co. Size Guide

Now comes the fun part: matching your pup’s measurements to our size chart. For example, if you’re shopping for a Reversible Harness, here’s the breakdown:

  • XS: 6–9 lbs | Neck: 8–10” | Chest: 12–15”

  • S: 10–18 lbs | Neck: 10–12” | Chest: 14–18”

  • M: 15–24 lbs | Neck: 12–14” | Chest: 17–23”

  • L: 22–39 lbs | Neck: 14–16” | Chest: 20–28”

  • XL: 38–55 lbs | Neck: 16–18” | Chest: 23–32”

                               

✨ Pro tip: If your pup is between sizes, we usually recommend sizing up for extra comfort.

 

Step 3: Keep Breed Differences in Mind

Still not sure? Use your dog’s breed as a starting point. For example:

  • Frenchies often rock a Medium.

  • Dachshunds tend to fit a Small.

  • Goldens usually wear a Large or XL.

But remember—every dog is unique, so measurements are always the best bet!

 

Step 4: Snap & Strut

Once your pup is geared up in their perfect size, it’s time for the best part: showing off! Don’t forget to tag @lucyand.co on Instagram—we love seeing your pups harnessing the cuteness.

                   

The Bottom Line

Sizing your dog’s gear doesn’t have to be a guessing game. With a quick measure, a peek at our size guides, and maybe a treat or two for cooperation, your pup will be ready to rock their Lucy & Co. look with confidence (and comfort!).

👉 Shop Harnesses Here

 

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