Adjustable Biothane® Dog Collar

Price range: £19.99 through £34.99

A made-to-measure adjustable BioThane® dog collar, individually handmade in Yorkshire for the perfect fit.

Made from genuine BioThane®, it’s strong, waterproof, odour-resistant and effortlessly easy to clean — built for everyday wear and all-weather adventures.

Choose from 40+ colours, 6 widths and a range of hardware finishes to create a collar that’s completely your own.

Adjustable BioThane® Dog Collar

A classic buckle collar, made properly and made for your dog.

Every Bullhorn Adjustable BioThane® Collar is handmade to order in Yorkshire, with your dog’s measurement set to the centre adjustment hole. This gives you a made-to-measure fit from the start, with the flexibility to adjust slightly either way when needed.

Made using genuine BioThane®, the collar combines exceptional strength and durability with a smooth, flexible feel that’s comfortable for everyday wear. Unlike traditional materials, BioThane® won’t absorb water or odours, rot or stretch, and when the adventures get muddy, it simply wipes clean.

Made Your Way

No two dogs are the same — and their collars don’t need to be either.

Choose from 40+ BioThane® colours, 6 different widths and a range of hardware finishes to create a collar that suits your dog perfectly. From lightweight, slim collars for smaller dogs to wider, more substantial designs for larger breeds, every collar is individually made to your chosen specification.

Built for Real Life

From everyday walks and muddy fields to rainy days and weekends by the water, these collars are designed to be used, not just looked at.

Each collar is individually constructed, with the fixings and construction adapted appropriately to its size. On our larger collars, we use additional rivets for increased strength and security, because the complete construction matters just as much as the material itself.

The result is a collar that fits properly, looks great and is built to handle whatever you and your dog get up to.

Your Questions Answered

Welcome to our FAQ section where we address common queries about our bespoke pet accessories. Explore below to find the answers you need.

What is Biothane and why is it used in your collars?

BioThane® is a premium coated webbing designed to be strong, waterproof and incredibly durable. It offers the classic look of leather without the maintenance — it won’t absorb water or odours and simply wipes clean. Comfortable, reliable and made for all-weather adventures, it’s the perfect material for everyday dog collars.

How do I measure my pet for a custom collar?

There are a few easy ways to get the right measurement, including using a soft tape measure around your dog’s neck or measuring an existing collar that already fits well. For step-by-step instructions and tips on getting the most accurate measurement, check out our full Measuring Guide.

Can I choose the color and width of the collar?

Absolutely. Choose from 40+ BioThane® colours and 6 different widths to create a collar that suits both your dog and your style. You can also choose your preferred hardware finish to make it completely your own.

What is your return policy for custom collars?

As every collar is handmade to your chosen size, colour and specifications, custom-made items cannot usually be returned or exchanged. However, if there’s a fault with your collar or we’ve made a mistake with your order, please get in touch and we’ll put it right.

How long does it take to receive my order?

Because most of our products are handmade to order, please allow up to 10 working days for us to make and dispatch your order.

That’s our worst-case timeframe though — most orders are made and on their way within 48 hours.

UK orders are sent via Royal Mail and typically arrive within 2–3 working days after dispatch. International delivery times vary depending on destination.

Need it sooner? Get in touch before ordering and we’ll always do our best to help.

Do you offer international shipping?

Yes! Bullhorn ships worldwide. International shipping costs are calculated at checkout based on your destination, with delivery times varying by country. Wherever you and your dog are, we’ll do our best to get your order to you.

What is BioThane®, and how is it different from leather or nylon?

BioThane® is a premium coated webbing that combines the classic look and feel of leather with the practicality needed for everyday adventures. It’s waterproof, odour-resistant, incredibly durable and simply wipes clean.

Unlike traditional leather or nylon, BioThane® won’t rot, stretch, absorb water or hold onto smells. Mud, rain, swimming and everyday dirt are no problem — simply wipe or rinse it clean and it’s ready to go again.

Are Biothane Collars durable enough for everyday use?

Absolutely. BioThane® is made for everyday use — it’s strong, waterproof, odour-resistant and easy to clean. It won’t rot, stretch or absorb water, making it ideal for everything from daily walks to muddy, wet adventures.

For dogs that regularly swim in the sea or spend time around salt water, we recommend our Stainless Collection, featuring heavy-duty, corrosion-resistant hardware built for even tougher adventures.

Is BioThane® comfortable for my dog?

Absolutely. BioThane® is smooth, flexible and lightweight, making it comfortable for everyday wear. Its non-absorbent surface stays soft and flexible even when wet, without becoming heavy or waterlogged.

The smooth finish is also great for longer coats, helping to reduce snagging, matting and rubbing compared with rougher materials.

How do I clean my Classic BioThane® Collar?

Cleaning BioThane® couldn’t be easier. For everyday dirt, simply wipe it clean with warm soapy water and a soft cloth. For muddier adventures, rinse it under the tap or give it a quick soak in warm soapy water, then rinse and leave to dry naturally.

If your collar has been used in the sea, always rinse the hardware with fresh water afterwards to help remove salt and keep it looking its best.

No special cleaners or treatments required — just quick, simple cleaning.

Will the colour fade over time?

BioThane® is known for its vibrant, long-lasting colour and is designed to stand up to everyday outdoor use. Like any material, some shades — particularly brighter and neon colours — may gradually show signs of wear or fading with heavy use and prolonged exposure to sunlight.

To keep your collar looking its best, simply clean it regularly and avoid contact with harsh chemicals, solvents and insect repellents.

Is BioThane® suitable for dogs with allergies or sensitive skin?

BioThane® can be a great choice for dogs with sensitive skin. Its smooth, non-porous surface doesn’t absorb water, dirt or odours and is easy to keep clean, helping to reduce the build-up that can sometimes irritate sensitive skin.

Every dog is different, though, so if your dog has a known allergy or skin condition, we recommend checking with your vet before choosing any collar material.

What happens if my dog gets the collar wet?

Nothing — that’s one of the biggest benefits of BioThane®. It’s completely waterproof, so it won’t absorb water, become heavy or develop that familiar “wet dog” smell.

Rain, puddles and swimming are no problem. Simply carry on with your adventure, and if it gets muddy or dirty, give it a quick rinse or wipe clean afterwards.

How do I choose the right size for my dog?

Check out our full Collar Measuring Guide for simple step-by-step instructions on getting the right measurement. You can measure your dog’s neck directly or use an existing collar that already fits well.

If you’re unsure or between sizes, just get in touch — we’re always happy to help you get the perfect fit.

What colours and finishes are available?

Choose from 40+ BioThane® colours, ranging from understated neutrals and soft pastels to bold, vibrant shades.

Finish your collar with your choice of premium hardware, including Silver, Antique Brass and Black. With so many combinations available, you can create a collar that’s completely your own.

Can I buy matching collars, leads, harnesses & accessories?

Absolutely. Our BioThane® collars, leads, harnesses and accessories are available in matching colours and hardware finishes, so you can create a fully coordinated set.

Choose your favourite colour and finish, then mix and match across the range to create the perfect set for you and your dog.

Are BioThane® collars adjustable?

It depends on the fastening you choose:

  • Quick-Release Buckle: Collars featuring a quick-release buckle are not adjustable. They’re handmade to your dog’s exact neck measurement for a made-to-measure fit.

  • Traditional Buckle: Our adjustable buckle collars feature three adjustment holes, with your chosen neck measurement on the centre hole and an additional hole either side for a little extra flexibility.

Can I return or exchange a tailored-fit collar if it doesn’t fit?

As each made-to-measure collar is handmade specifically to the measurements you provide, it cannot usually be returned or exchanged if the incorrect size has been ordered. We recommend checking your measurements carefully and using our Measuring Guide before placing your order.

If your collar doesn’t fit, please get in touch. Where possible, we may be able to alter or resize it for you, and we’ll always do our best to help.

Which width should I choose for my dog?

The best width depends on your dog’s size, build and the look you prefer. We offer 6 widths, from lightweight 9mm collars for tiny dogs through to substantial 38mm collars for larger breeds.

If you’re unsure, check out our Width & Sizing Guide or get in touch and we’ll happily recommend the most suitable option for your dog.

Which hardware should I choose?

Our standard hardware is ideal for everyday walks and is available in a choice of finishes to complement your BioThane® colour.

For dogs that regularly swim, spend time at the beach or need something more adventure-proof, choose our Stainless Collection or our lightweight plastic & stainless-steel combination. Both offer excellent corrosion resistance and are ideal for wet, muddy and salty adventures.

How strong are BioThane® collars?

Very strong. Genuine BioThane® Standard has a rated break strength of up to 1,000 lb (454 kg) per inch of width, making it exceptionally strong for its weight.

Of course, a finished collar is only as strong as its complete construction — including the hardware, fastenings and fixings. That’s why we build each collar appropriately for its size, using additional rivets on our larger collars to increase strength and security where it’s needed most.

Can you make a collar to a custom size?

Absolutely — that’s what we do. Our collars are handmade to order, so we’re not limited to standard off-the-shelf sizes.

Simply provide your dog’s measurement when ordering and we’ll make the collar accordingly. If you need something a little different or have specific requirements, get in touch — bespoke is our speciality.

Can you make a collar to a custom size?

Absolutely — that’s what we do. Our collars are handmade to order, so we’re not limited to standard off-the-shelf sizes.

Simply provide your dog’s measurement when ordering and we’ll make the collar accordingly. If you need something a little different or have specific requirements, get in touch — bespoke is our speciality.