Closer control
Useful when you want your dog closer in busy environments, structured training or tighter spaces.
PK9 Gear fit guide
How to measure your dog.
Get the fit right the first time. This guide covers the measurements you need for collars, slip collars, leads and custom PK9 Gear.
Neck for collars
Head for slip collars
Measurements in cm
01
Step 01
Collar fit: the neck
Wrap a soft tape around the base of your dog's neck, where the collar will actually sit. Slide two fingers flat under the tape to allow a comfortable working fit.
Keep the tape snug, but do not pull it tight. Take the measurement twice and write down the larger result in centimetres.
No tape measure? Use a piece of string, a bootlace or a charging cable, mark the point where it meets, then measure that length against a ruler.
The two-finger check
Two fingers should slide comfortably underneath the tape, between the tape and your dog's neck.
Regular collar sizing
Neck measurement| Size | Neck | Typical dogs |
|---|---|---|
| XS | 21–25.5 cm | Toy breeds, small terriers, puppies |
| S | 25.5–32 cm | Whippets, mini poodles, small kelpies |
| M | 30–40 cm | Border collies, kelpies, staffies |
| L | 38–48 cm | Labradors, German shepherds, boxers |
| XL | 46–56 cm | Rottweilers, mastiffs, large shepherds |
Sizes can overlap between products. Always check the size selector or size chart on the product page before ordering.
02
Step 02
Slip collar fit: measure what it needs to pass over
A slip collar must pass comfortably over your dog's head before it reaches its working position. Measure the complete circumference around the widest part of the head, typically just in front of the ears, over the skull, down the cheeks and underneath the jaw.
Keep your dog standing and settled, take the measurement twice, and use the larger result. Allow enough room for the collar to go on and off smoothly without being excessively loose in use.
Measure before ordering
Measure all the way around the widest part of the head, usually just in front of the ears, then compare it with the exact product options.
Slip collar sizing
Check the product before ordering| Size | Best suited to |
|---|---|
| 45 cm | Small size option |
| 55 cm | Medium size option |
| 65 cm | Large size option |
Current sizes may vary by product and material. Keep this table aligned with the live product options.
03
Step 03
Choose a lead length for the job
Lead length is less about your dog's body size and more about how you plan to use it. Shorter leads give closer control, while longer leads give more freedom for training, recall and exploration.
Everyday walking
A versatile everyday length with room for natural movement while maintaining a comfortable connection.
Recall & exploration
A practical long-line length for puppies, recall practice, controlled freedom and smaller training spaces.
Tracking & open spaces
More range for tracking, recall work, off-lead preparation and large open areas.
04
Step 04
What to send if you're going custom
Custom gear starts with the right measurements. Send us the information below with your request so we can recommend the most suitable fit, length and hardware for the job.
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1
Your measurement
Neck measurement for a standard collar, or the required head measurement for the slip-collar style you are ordering.
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2
Your dog's weight
Approximate weight in kilograms helps us choose suitable materials and hardware.
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3
How you'll use the gear
Tell us whether it is for everyday walking, training, tracking, sport work or another specific use.
Still not sure?
Send us your measurements and we'll help.
If you are between sizes or unsure which product will suit your dog, contact PK9 Gear before ordering.