Snazzy Pooch Size Guide
Dog Harness & Collar Size Guide
Find the perfect fit for your dog in seconds. Select your breed and enter measurements for instant recommendations across every Snazzy Pooch product.
Neck
Measure around the base of the neck where a collar sits. Keep two fingers under the tape for a comfortable fit.
Chest (girth)
Measure the widest part of the chest behind the front legs. Most important measurement for harnesses.
Weight
Use accurate scales. Weight guides No-Pull and Step-In sizing. If between sizes, always size up.
| Size | Strap width | Neck measurement |
|---|---|---|
| XS | 13 mm (0.5") | 15 – 28 cm |
| S | 20 mm (0.79") | 20 – 29 cm |
| M | 20 mm (0.79") | 27 – 41 cm |
| L | 25 mm (0.95") | 33 – 52 cm |
| XL | 25 mm (0.95") | 37 – 60 cm |
Tip: Between sizes? Choose the smaller size for collars — always measure your dog's neck directly, not an existing collar.
| Size | Width | Neck | Chest |
|---|---|---|---|
| XS | 13 mm | 15 – 28 cm | 20 – 32 cm |
| S | 20 mm | 19 – 29 cm | 22 – 35 cm |
| M | 20 mm | 27 – 41 cm | 31 – 59 cm |
| L | 25 mm | 35 – 55 cm | 40 – 75 cm |
| XL | 25 mm | 42 – 70 cm | 49 – 90 cm |
Tip: Chest girth is the most important harness measurement. If between sizes, always size up.
| Size | Weight | Neck | Chest |
|---|---|---|---|
| XS | 2 – 4 kg | 22 – 34 cm | 34 – 40 cm |
| S | 4 – 8 kg | 32 – 48 cm | 44 – 52 cm |
| M | 8 – 12 kg | 40 – 60 cm | 48 – 62 cm |
| L | 12 – 20 kg | 44 – 66 cm | 59 – 76 cm |
| XL | 20+ kg | 52 – 76 cm | 74 – 102 cm |
Tip: No-pull harnesses sized primarily by weight. Ideal for Labradors, Beagles and high-energy breeds.
| Size | Webbing width | Chest girth |
|---|---|---|
| S | 1.5 cm | 35 – 50 cm |
| M | 2 cm | 45 – 68 cm |
| L | 2.5 cm | 55 – 78 cm |
Tip: Ideal for dogs who dislike things going over their head. Particularly good for Dachshunds — keeps pressure off the spine.
| Size | Width | Length |
|---|---|---|
| S | 13 mm (0.5") | 120 cm (47.25") |
| M | 20 mm (0.79") | 120 cm (47.25") |
| L | 25 mm (0.98") | 150 cm (59.06") |
Tip: Match your lead size to your collar or harness for the best proportion and a perfectly coordinated matching set.
| Size | Dimensions | Best for |
|---|---|---|
| S | 7.5 cm × 5 cm | XS & S collars |
| M | 10 cm × 6 cm | S & M collars |
| L | 11.5 cm × 6 cm | M & L collars |
Tip: Bows attach directly to the collar. Choose the size that matches your collar for the best proportion. Perfect for weddings.
Breed-specific size tips
Labrador
Broad chest and powerful shoulders. Many Labs fill out until 18–24 months. No-Pull or padded harnesses recommended. Check chest room over winter coats.
Staffordshire Bull Terrier
Muscular neck and deep chest. Choose sturdy, padded harnesses and avoid rubbing under the forelegs. If between sizes on chest, always go up.
French Bulldog
Stocky frame with short neck. Avoid pressure on the throat — a Comfort Fit harness spreads load across the chest. Watch chest width carefully.
Dachshund
Long backs and narrower fronts. Step-In harnesses keep pressure off the spine. Ensure the chest strap sits lower and does not rub the underarm.
Cockapoo & Cavapoo
Fluff can hide fit — re-measure after grooming. Adjustable Step-In or No-Pull harnesses suit energetic walks. Full grown by 12–18 months.
Golden Retriever
Feathered coats need adjustability. No-Pull or Comfort Fit ideal for adolescence when pulling is common. Check fit seasonally.
Beagle
Active scent hounds — choose secure Step-In or Comfort Fit. Measure snug to prevent backing out when following a scent.
Jack Russell
High-energy escape artists. A snug Step-In or No-Pull harness helps control zig-zagging. Double-check chest fit regularly.
Shih Tzu & Chihuahua
Small frames need light hardware and soft webbing. Avoid bulky fittings near joints. Step-In harnesses are safest for Chihuahuas.
Border Collie & German Shepherd
Athletic working builds. Front-clip options assist with heel training. Coats change seasonally — re-check fit every few months.
Frequently asked questions
How do I measure my dog for a harness?
Measure the neck just above the front shoulder blades below where a collar sits, and the widest part of the chest behind the front legs. Keep the tape snug but not tight — you should be able to fit two fingers underneath. The chest measurement is the most important for harness sizing.
What size collar does my dog need?
Match your dog's neck measurement to our collar size ranges. If between sizes, choose the larger for comfort. Always measure your dog's neck directly rather than measuring an existing collar — collars stretch over time and will not be accurate.
Do dogs in the UK need engraved collars by law?
Yes. The Control of Dogs Order 1992 requires a collar with the owner's name and address when in a public place. Our personalised engraved collars satisfy this requirement — your dog's name and your contact details are engraved directly onto the collar, so no separate tag is needed.
Which harness style is best for my breed?
Active pullers benefit from a front-clip No-Pull harness. Smaller breeds and dogs who dislike things over their head often prefer Step-In styles. Dachshunds should always use a Step-In or chest harness to protect their long spine. Use the interactive tool above for a tailored recommendation.
My dog is between two sizes — which should I choose?
For harnesses, always size up — a slightly larger harness can be adjusted snugly, while a too-small harness cannot be adjusted at all and can cause discomfort. For collars, choose the smaller size if your measurement is near the bottom of the larger size's range, as collars should fit snugly.
Can I personalise every product?
Yes — every collar and harness can be personalised with your dog's name, your phone number or postcode, your choice of font, and hardware colour. Each piece is made to order specifically for your dog.
What if my breed isn't listed in the size tool?
Select "Other breed" and enter your dog's actual measurements — neck, chest and weight — for accurate sizing. If you're unsure, contact us and we'll help you find the right fit.
Popular UK size queries
Our size guide covers the most popular dog breeds in the UK. Whether you're looking for a personalised harness for a Cavapoo, the right collar size for a French Bulldog, or a no-pull harness for a Labrador, our interactive tool gives you instant recommendations based on your dog's actual measurements.
- Best harness size for Cavapoo by chest & weight
- Which collar size fits a French Bulldog neck?
- No-pull harness size for Labrador puppy (kg to size)
- What size Step-In harness for a Dachshund chest?
- Personalised collar size for Shih Tzu with long coat
- Border Collie harness fit guide: training & front-clip
- Staffy chest size & best harness type UK
- Exact collar size for a Jack Russell 30–33 cm neck
When to size up or down
If your measurement sits at the very end of a size range, size up for harnesses and choose the smaller band for collars. Always check chest room for deep-chested or stocky breeds like Staffies and French Bulldogs.
Troubleshooting fit
Rubbing near the forelegs? Lower the chest strap or try a Step-In. Collar rotating or slipping? Adjust smaller or try a narrower strap width. Pulling on walks? A front-clip No-Pull harness can significantly help with heel training.
Delivery & Returns
Delivery times: Most Snazzy Pooch orders arrive within 6–10 working days.
Many of our accessories are personalised, or carefully prepared to order, so please allow this timeframe before getting in touch about delivery.
UK Delivery
- Free UK delivery on all orders.
- Estimated delivery: 6–10 working days from the date your order is placed.
- You’ll receive updates by email once your order is on its way.
- Delivery times may be slightly longer during busy periods, bank holidays or seasonal peaks.
USA & International Delivery
- Free USA shipping on our personalized products.
- Our Snazzy Pooch No Pull Harnesses, Step In Harnesses and Comfort Fit Harnesses are shipped internationally using International Economy Shipping at £9.99.
- Estimated delivery: 6–10 working days unless stated otherwise at checkout.
- International customers are responsible for any local customs fees, duties or import charges where applicable.
Personalised & Personalized Items
- Personalised collars, harnesses and accessories are made with your chosen details.
- Please double-check spelling, phone numbers and dates before placing your order.
- Personalised and personalized items cannot be returned unless they arrive faulty or damaged.
Wedding Tails Collection
- Wedding Tails pieces are prepared with extra care for special occasions.
- Please allow up to 10 working days for delivery.
- If your wedding date is close, we recommend ordering as early as possible.
Returns & Exchanges
- Returns are accepted within 30 days of delivery for non-personalised items.
- Items must be unused, in original condition and with any tags or packaging included.
- Personalised items are only returnable if they arrive faulty or damaged.
- For returns & exchanges, customers cover the return postage and we’ll send the replacement free of charge.
Faulty or Damaged Items
- Email us with photos and your order number.
- If the item is faulty or damaged, we’ll arrange a replacement or refund.
Need help?
Email info@snazzypooch.co.uk or contact us via the store chat and we’ll be happy to help.