Leather Cat Harness - 'The Gatsby' - Black

Regular price £47.50 GBP Save £-47.50
Tax included.

Genuine Leather
Vegan Cork
Only 39 items in stock!

Open up a whole new world of harness adventures for you and your cat! The Gatsby leather cat harness is a comfy & secure cat harness that can take you and your cat on adventures of all shapes and sizes - whether you’re exploring nature, crossing town to the vets, or just hanging out together in the backyard.

The Gatsby leather cat harness is crafted from luxurious genuine leather that will last a lifetime but is so soft and supple your cat will soon forget they even have a harness on.

This harness was designed with the help of a team of escape-artist cats around the world who helped put each prototype through its paces. With their assistance, we pioneered the unique Gatsby cat harness design, which is resistant to the usual breakout tricks, to create a safe cat harness that's secure as can be.

👉 Click to view the Gatsby size chart & measuring guide

Please note: the Gatsby cat harness is designed for use with a leash, under human supervision. We do not recommend the use of cat harnesses for unsupervised tethering, as it is potentially dangerous and can adversely affect the escape-proofing of the harness.

The Gatsby cat harness and kitten harness is specially designed from the ground up, just for cats! Its natural scent helps your cat accept their harness with ease, while the simple single buckle step-in design means that there’s no need to put anything over your cat's head or disturb them with loud and scary velcro. Just pop your cat's front paws through the harness loops, clip up the single buckle, and you’re ready to go!

The unique sling design cradles your cat in all of the right places, while leaving their neck completely free - we hear from a lot of asthmatic kitties that it works much better for them than other harness designs because of this! 

With 3 body sizes to choose from and 4 fully-adjustable straps, getting that ‘just right’ fit couldn’t be easier. To find your cat's perfect Gatsby size, simply take a look at our size and measuring guide here.

The Gatsby harness comes in three adjustable sizes, to cater to every shape and size of cat (even little kittens and big chonky floof-monsters!). To find the right size Gatsby for your cat, simply follow our size and measuring guide here.

You can also find answers to some of our common sizing questions below!

What if my cat is between two harness sizes?

When a cat is on the borderline between two sizes we always suggest choosing the smaller of the two, as it ensures a good snug fit which will make the harness nice and escape proof (and is comfier for your cat too as the harness won't move around as they walk).

Because of the way the Gatsby harness is designed, there is a little bit of give and take between the front straps and back straps:

  • If your cat needs just an extra cm or half inch at the back, you can loosen the front straps just a little to give them the extra adjustability they need at the back.

  • Or, if your cat needs an extra cm or half inch at the front, you can loosen the back straps just a little to give them the extra adjustability they need at the front. 

Are your harnesses adjustable? Will I need to buy a larger size as my cat grows?

All of our harnesses come in three sizes (small / medium / large), and each size has a range of adjustability on both the front and back straps.

There is a LOT of adjustability in all of our harness sizes, so there is a very good chance that you will be able to use a single size and adjust it as your cat grows. Obviously this depends on your particular cat and how much growing they will do - but as an example, one of the models on our store, Lola - still wears the 'small' size Gatsby harness that she first wore as a kitten, even though she is now 4 years old and fully grown. 

I know my cat's weight. Can I use this to choose their harness size?

The secret to success with the Gatsby harness is getting the fit just right! We've designed a harness that comes in three sizes to accommodate every shape and size of cat. However, we've found that weight alone isn't accurate enough to choose your cat's perfect size.

Instead, to ensure the perfect fit for your cat's Gatsby harness (which is really important for your cat's comfort and safety), you need to take just two simple measurements.

Click here to view our size and measuring guide which will take you through the process and includes a handy video too! 


There are some changes to our shipping services due to the COVID-19 outbreak. Please click here to read the latest.

Do you ship worldwide?

Yes! We ship from the UK to over 60 countries in the world, including the USA, Canada, Australia and many more. Please click here to view the full list of countries that we ship to.

How much does shipping cost?

On orders below the free shipping threshold, shipping is a flat fee based on your country, no matter how large or small your order.

To preview the shipping rates and options for your region, simply add an item to your cart. The cart will appear, and below your item(s) you'll find a preview of all of the available shipping rates for your region.

Buyers are responsible for any customs and import taxes that may apply.

When will I receive my order?

We aim to ship all orders received before 4pm GMT Mon-Fri on the same day! All orders received after this time will ship on the next working day.

For the latest estimate of shipping speed to your region, please visit our COVID-19 Shipping Updates page.


Q: If my cat's Gatsby harness doesn't fit, can I return it for another size?

We happily accept returns! If you find that you need a different size harness for your cat, please visit our Returns Center within 30 days of receiving your order, to arrange a return & refund of your original items so that you can place a new order for the size you need. We have warehouses in the UK and USA, so you can choose whichever is most convenient for you to send your return to. You can find more details on our returns policy here.

Q: What is the difference between the cork Gatsby harnesses and leather Gatsby harnesses?

The Gatsby harness comes in two materials - natural genuine leather, and vegan cork 'leather'. They are both equally supple and strong. The only difference between them is their water resistance. The leather Gatsby harness is splashproof, whereas the cork Gatsby harness can handle full immersion. So if your cat loves to swim or you live on or around water, we'd recommend opting for the cork Gatsby harness over the leather!

Q: Do you have any advice on how to harness train my cat?

We're always on hand with tailored help and advice to help you get your cat exploring happily in their Gatsby harness! If you're just starting out, we recommend starting with our handy guide to training your cat to walk on a harness and leash: How To Harness Train Your Cat.

If you still have any questions at all, simply drop us an email at hello@supakit.co, tell us a little about where your cat is in their harness training journey, and we'll be delighted to help out!

Q: I have a Chihuahua / small dog - is the Gatsby harness suitable for them? And how do I find the right size?

The Gatsby harness is designed for cats but we do know of several small dogs that have fallen in love with the Gatsby! You can measure your dog up as per the size & measuring guide, but just remember that these measurements are for a snug, body-hugging fit. If you'd like your dog to have a looser fitting harness or room to put a jumper on underneath, simply add on a few centimetres or inches to the measurements you've taken.