| Size | Neck (adjustable) | Width | Thickness |
|---|
| S | 20–30 | 1.9 | 0.35 |
|---|
| M | 30–40 | 1.9 | 0.35 |
|---|
| L | 40–50 | 2.5 | 0.35 |
|---|
All measurements in cm.
Measure around the middle of your dog's neck with a soft tape and choose the size where that number sits inside the range, ideally near the middle. Once buckled, two fingers should slide flat under the collar.
Breed guide: S – Chihuahua, Yorkie, Toy Poodle. M – Jack Russell, Beagle, Cocker Spaniel. L – Labrador, Golden Retriever, Boxer.
Between sizes? Take the larger size. Hand-measured; allow 1–2 cm.