The PetPace Collar comes in 3 sizes – Small (dog and cat collar), Medium and Large. To choose the right size collar for your pet follow the chart below. The best way is to measure the neck circumference, but you can also pick the collar size based on the pet’s weight:
| Size | Weight (lb.) | Neck Circumference (inches) |
| Small | 8-20 | 8-12 |
| Medium | 20-60 | 10.5-18 |
| Large | >60 | 16-24.5 |