Small Breed Waterproof Collar: Choosing 21cm to 28cm Neck Fit

Measure first, then choose the collar

A small breed waterproof dog collar only works if the neck size is right. For toy and miniature breeds, the difference between a comfortable fit and a loose or tight collar often comes down to a centimetre or two. The Biothane collars in this guide are made for neck sizes from 21cm to 28cm, so start by measuring your dog’s neck at the point where the collar normally sits. If the measurement falls within that range, you can focus on width, material, and colour instead of guessing.

All four collars below share a 15mm width and 2.5mm thickness, which is slim enough for delicate necks without being flimsy. They are handmade in Yorkshire and use Biothane, a PVC/TPU-coated material that is waterproof and resistant to mould and bacteria. That makes them a practical choice for small dogs that get wet, muddy, or just need a quick wipe-down after a walk.

Four colourways, one slim Biothane build

The core decision is colour and hardware, because the fit and material are consistent across the range. Each collar is available in neck sizes from 21cm upward (variants shown include 21cm, 22cm, and 23cm) and in hardware colours such as brass, silver, rose gold, and antique brass. The table below highlights what each colour brings, so you can match your dog’s coat or your own preference.

• Neon Green: High-visibility option for walks where you want your dog to stand out. The bright colour is eye-catching and suits active little dogs.
• Country Green: A timeless, natural shade that fits countryside walks and everyday wear without looking flashy.
• Wine: Deep and elegant, this is a sophisticated choice that works for occasions or daily use.
• Navy: Classic and versatile, navy is the safe pick for daily walks and weekend adventures alike.

Product details: Neon Green and Country Green

• Neon Green Small Breed Waterproof Biothane Dog Collar 21cm to 28cm Neck: Neon Green Small Breed Waterproof Biothane Dog Collar, 15mm wide, 2.5mm thick, neck sizes 21–28cm, 100% waterproof and mould- and bacteria-resistant, wipes clean in seconds. If visibility is your priority, this collar combines a slim fit with a bright colour and easy cleaning for wet or muddy walks.

  

  Neon Green Small Breed Waterproof Biothane Dog Collar 21cm to 28cm Neck

• Country Green Small Breed Waterproof Biothane Dog Collar 21cm to 28cm Neck: Country Green Small Breed Waterproof Biothane Dog Collar, 15mm wide, 2.5mm thick, neck sizes 21–28cm, 100% waterproof and mould- and bacteria-resistant, wipes clean in seconds. A muted green that blends into outdoor settings while offering the same practical Biothane benefits as the Neon Green version.

  

  Country Green Small Breed Waterproof Biothane Dog Collar 21cm to 28cm Neck

Product details: Wine and Navy

• Wine Small Breed Waterproof Biothane Dog Collar 21cm to 28cm Neck: Wine Small Breed Waterproof Biothane Dog Collar, 15mm wide, 2.5mm thick, neck sizes 21–28cm, 100% waterproof and mould- and bacteria-resistant, wipes clean in seconds. For a more formal or elegant look, the Wine collar offers the same waterproof performance in a deep, timeless shade.
• Navy Small Breed Waterproof Biothane Dog Collar 21cm to 28cm Neck: Navy Small Breed Waterproof Biothane Dog Collar, 15mm wide, 2.5mm thick, neck sizes 21–28cm, 100% waterproof and mould- and bacteria-resistant, wipes clean in seconds. Navy is a versatile everyday colour that hides dirt well and pairs easily with different coats and hardware.

Hardware and personalisation: what to check before you buy

Each collar includes free personalised engraving directly onto the Alumax clasp, so you can add your dog’s name or your phone number without a dangling tag. That’s a genuine convenience for small dogs, as tags can be noisy or get caught. Hardware colour options vary slightly by product: the Neon Green, Country Green, and Wine collars list brass, silver, rose gold, and antique brass, while the Navy collar lists brass, stainless steel, rose gold, and antique brass. If you have a strong preference for stainless steel, the Navy is the one to choose.

• Engraving: Free engraving on the Alumax clasp is included on all four collars. It keeps identification attached without extra tags.
• Hardware colours: Brass, silver, rose gold, and antique brass are available on most; Navy offers stainless steel instead of silver. Pick the finish that matches your dog’s other gear.
• Matching leads: Each colour has a matching Biothane lead available separately, so you can create a coordinated set if you want a unified look.

Cleaning and everyday use

Biothane is straightforward to live with. The smooth surface won’t rub or snag fine fur, and because it is waterproof and mould- and bacteria-resistant, it wipes clean in seconds. That makes these collars a sensible choice for small breeds that swim, walk in wet grass, or simply get dirty on a regular basis. There are no special cleaning instructions in the supplied product information beyond wiping clean, so avoid harsh chemicals or abrasive scrubbers that could damage the coating.

One limitation to note: the supplied records do not include a recommended cleaning routine or drying time. If you need detailed care instructions, check the packaging or contact the maker directly. For most everyday mess, a damp cloth is all you’ll need.

How to decide between the four

If you want maximum visibility, go for the Neon Green. If you prefer a natural, understated look, Country Green is the easy choice. For a smarter, more formal appearance, Wine adds a touch of elegance. And if you want a classic, dirt-hiding colour that works with everything, Navy is the safe bet. All four share the same slim 15mm width, waterproof Biothane material, and engraving option, so the decision really comes down to colour and hardware preference. Just make sure your dog’s neck measures between 21cm and 28cm before you order, and you’ll have a collar that fits well and handles whatever your small dog gets up to.