What Is a Unicorn Dog Harness and Why Is It So Popular?

A unicorn dog harness is an everyday harness with a magical pastel unicorn design. The best versions are not just cute or novelty. They are thoughtfully engineered pieces of walking equipment that keep your dog comfortable, secure and visible on real life walks.
Many dog owners searching for a cute girl dog harness, a pastel dog harness or something that feels a little bit special end up choosing unicorn designs. They are fun, eye catching and make every walk feel like a moment, not just a routine lap around the block.
When you choose a unicorn harness with proper structure, padding and strong hardware, it becomes a piece you can use every day, not just for photos or special occasions. That is where designs like the Trail & Glow Be Unique Unicorn really stand out.
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Use code UNICORN15 for 15% off your first Be Unique Unicorn dog harness.
✨ Shop Be Unique Unicorn HarnessWhy unicorn designs have taken over our dog walks
Unicorn prints tap into a mix of nostalgia, joy and pure escapism. Soft pastel colours and tiny details like stars, rainbows and clouds look beautiful in real life and stand out instantly in photos and videos. In busy parks a unicorn dog harness is easy to spot at a glance and adds a playful, positive feel to every outing.
On social media, unicorn patterns tend to outperform plain harnesses because they catch the eye in a split second. If you love taking photos of your dog, or simply want your walks to feel a little bit more magical, a unicorn harness is an easy way to add that extra sparkle.
Harness first, unicorns second
Underneath the artwork, a unicorn dog harness still has to behave like a serious harness. A poor fit can cause rubbing behind the legs, restrict movement or put pressure on the neck. Over time that can make walks uncomfortable for your dog.
A good harness, unicorn themed or not, should:
- Spread pressure across the chest instead of the throat
- Allow natural shoulder and front leg movement
- Have multiple adjustment points for a secure, snug fit
- Use soft, breathable materials next to the coat
- Include strong buckles, D rings and stitching you can trust
Meet the Trail & Glow Be Unique Unicorn dog harness
The Trail & Glow Be Unique Unicorn harness from Bailey & Coco combines a pastel unicorn and rainbow print with the practical features you need every day. It has a fully adjustable three buckle design, a lockable neck clasp so you do not have to pull it over your dog’s head, reflective strips around the front and back and a sturdy handle on the back for extra control.

Whether you think of it as a unicorn dog harness, a cute girl dog harness or simply the happiest piece in your dog’s wardrobe, the Be Unique design is built for real walks as well as magical moments.
If you prefer to browse all styles before choosing your unicorn print, you can also shop all Bailey & Coco dog harnesses here.
Next, let us look at how to choose the best unicorn harness for your dog, from no pull features to reflective details and matching accessories.
How To Choose the Best Unicorn Dog Harness
With so many magical designs available, it can be tempting to choose based on looks alone. But the best unicorn dog harness will balance style with serious function. Here are the key features to pay attention to before you add to cart.
1. Fit and adjustability
A pretty harness that does not fit properly will not be comfortable or safe. Look for a design with adjustment at the neck, chest and along the body. This allows you to create a close, secure fit that does not gape or dig in.
The Be Unique Unicorn harness uses a three buckle system with a lockable neck clasp. That means you can place the harness around your dog rather than pulling it over their head. It is especially helpful for nervous dogs, dogs with bigger heads or fluffier coat types and owners who prefer a calmer, predictable routine.
2. No pull unicorn harness features
If your dog tends to pull, it is worth choosing a no pull unicorn harness with a front D ring on the chest. When used with a suitable lead and kind, reward based training, this can help gently redirect pulling and make your walks more comfortable for both of you.
The Be Unique Unicorn harness includes both a front D ring and a back D ring, so you can switch between training and relaxed walking as needed.
3. Reflective details for low light walks
Pastel harnesses can look soft and subtle, so reflective elements are especially important. Trail & Glow designs have reflective strips around the front and back, helping your dog stay visible to drivers, cyclists and other walkers in low light. Pairing this with a reflective lead can create an extra layer of safety on darker mornings and evenings.

4. Materials and breathability
Under the unicorn print you want materials that feel kind to your dog’s coat and skin. A high quality harness will use a soft, breathable mesh lining with a durable outer layer that stands up to UK weather. Quick dry fabrics are ideal for dogs who enjoy puddles, beach days and the occasional roll in the grass.
5. Matching unicorn accessories and sets
If you love a coordinated look, you can build a complete unicorn walking set. The Be Unique Unicorn collection includes a matching lead, collar, bow tie, poo bag holder, dog walking bag strap and full bundle options.

For the easiest option, you can choose the Be Unique Unicorn 5 piece harness bundle, which includes the harness, lead, collar, bow tie and poo bag holder in one coordinated set.
If you prefer to mix and match, you can browse the full Be Unique Unicorn collection here and build your own magical set.
Now that you know what features to look for, let us walk through how to measure your dog and find the right size in the Be Unique Unicorn range.
How To Size a Unicorn Dog Harness and Avoid Common Fit Mistakes
Choosing the right size is one of the most important steps in finding the perfect unicorn harness. A well fitted harness feels secure, supports the body properly and helps your dog relax on walks. A poorly fitted harness can cause rubbing, slipping and frustration.
Step by step: how to measure your dog
You only need a soft tape measure and a calm few minutes. Measure two key areas:
- Neck: wrap the tape around the base of the neck where a collar would sit. The tape should be snug but not tight.
- Chest: measure around the widest part of the ribcage, just behind the front legs. This is the most important measurement for harness sizing.
Write down both measurements in centimetres, then compare them to the size guide on the Be Unique Unicorn product page. If your dog is between sizes, the roomier option that you can adjust into is usually the most comfortable.

If you are choosing a unicorn harness for a puppy, look for a fully adjustable design like Trail & Glow so you can gradually let it out as they grow. This works beautifully as a unicorn puppy harness because you can keep the same magical look as they move through sizes.
Breed shapes and fit tips
Every dog is unique, but here are some general guidelines that often apply:
- XS: tiny breeds and puppies such as miniature dachshunds and very small toy breeds
- S: many pugs, cavapoos and other small companion breeds
- M: slim medium dogs such as many spaniels and small labradoodles
- L and XL: broader medium and large breeds, including many Labradors and larger crossbreeds

The longer chest length in Trail & Glow designs is especially kind to longer backed and deeper chested dogs. It helps keep the harness away from the sensitive area behind the front legs, which is why many Bailey & Coco customers choose these designs for dachshunds, cockapoos and other tricky to fit shapes.

Common sizing mistakes to avoid
To help your unicorn dog harness fit perfectly, try to avoid these common pitfalls:
- Guessing based on age alone instead of measuring
- Leaving the harness so loose that your dog can back out of it
- Choosing a size based only on weight without considering chest depth
When to adjust or replace your unicorn harness
Check your dog’s harness regularly for signs of rubbing, stretched webbing or loose hardware. Adjust the straps if your dog’s shape changes or if the harness starts to sit differently. A well made harness like Be Unique Unicorn is designed to last, but like any accessory it will benefit from regular safety checks and gentle cleaning.
💬 Want to see how it looks on real dogs?
Hundreds of UK dog parents have already shared their photos and experiences.
With sizing sorted, let us finish by looking at how to style your unicorn harness, build a complete set and decide if it is the right choice for your dog.
Styling Your Unicorn Dog Harness and Building a Complete Magical Set
Once your unicorn harness fits beautifully, you can have fun styling the rest of your walking kit. A unicorn dog harness is a tiny outfit and a safety tool in one. With the right accessories, you can create a look that feels magical, practical and totally unique to your dog.
Creating a coordinated unicorn walking set
The Be Unique Unicorn harness sits at the heart of a wider collection, so you can easily build a full set. You can add a matching lead, adjustable collar, bow tie, poo bag holder and even a dog walking bag with a unicorn strap.

For a complete matching kit, the easiest option is the Be Unique Unicorn 5 piece harness bundle. If you want to mix in other colours and accessories, you can also browse the full Be Unique Unicorn collection here.
Daytime walks versus twilight sparkles
In bright daylight, the unicorn print and pastel tones do most of the talking. In the darker months and on late evening walks, you will really appreciate the reflective elements built into the Trail & Glow range. Reflective trim around the front and back of the harness catches light from car headlights and street lamps, helping your dog stay visible.
Pairing your unicorn harness with a reflective lead and collar gives layered visibility. For extra sparkle, you can also add a little clip on safety light to the harness or collar.

Is a unicorn harness right for your dog?
A unicorn design can work for many different dogs, from tiny toy breeds to chunky bulldogs and playful Labradors. The main things to check are fit, comfort and safety. If your dog enjoys being noticed, loves cuddles and has a playful personality, a unicorn harness can be a perfect match.

Unicorn dog harness versus plain harness
| Feature | Unicorn dog harness (Be Unique) | Plain everyday harness |
|---|---|---|
| Visual impact | High. Pastel, playful and eye catching. | Low to medium. Often subtle and easy to overlook. |
| Reflective safety | Built in reflective strips around front and back. | Varies. Some designs have no reflective details. |
| Matching accessories | Full Be Unique Unicorn set available, including lead, collar and bag. | Often limited or mismatched. |
| Fit and comfort | High, when you choose a fully adjustable Trail & Glow harness. | Depends on cut, materials and adjustment points. |
| Fun factor | Very high. Makes every walk feel special. | Moderate. Functional rather than playful. |
Top 5 FAQs about unicorn dog harnesses
Are unicorn dog harnesses suitable for puppies?
Yes, many puppies can wear a unicorn dog harness as long as it is fully adjustable and fitted correctly. Choose a size based on your puppy’s current chest measurement, adjust the straps so it feels snug but not tight and introduce it slowly with treats and praise.
Is the Be Unique Unicorn harness a no pull unicorn dog harness?
Yes. The Trail & Glow Be Unique Unicorn harness includes a front D ring on the chest which can be used as part of a no pull training set up. When used with a suitable lead and kind, reward based training, it can help reduce pulling by gently redirecting your dog’s movement.
What makes this a good girl dog harness?
The pastel unicorn artwork, soft colours and refined detailing make the Be Unique design a popular choice as a girl dog harness. At the same time, the structure, padding and safety features are designed for all dogs regardless of gender.
How do I wash and care for the unicorn harness?
We recommend machine washing your unicorn dog harness on a gentle, low-temperature cycle (inside a laundry bag is ideal), then allowing it to air dry naturally. This protects the reflective details, hardware and pastel unicorn print. For quick refreshes after muddy walks, a simple wipe down with cool water works perfectly.
What about delivery, returns and payment options?
Bailey & Coco offers free UK delivery over £50, plus a hassle free returns period if the size is not quite right. At checkout you can pay securely by card, and on eligible orders you will see options like Klarna for extra flexibility.
🦄 Do not forget your unicorn discount
Use code UNICORN15 for 15% off your Be Unique Unicorn dog harness today.
✨ Claim Your Unicorn DiscountIf you want to compare other fits and prints as well, you can always browse our full dog harness collection and find the perfect match for your magical pup.






















































































