X-Small
- Neck: 7"-10"
- Pets Weighing: 3lbs.-5lbs.
Small
- Neck: 10"-13"
- Pets Weighing: 6lbs.-10lbs.
Medium
- Neck: 13"-16"
- Pets Weighing: 11lbs.-15lbs.
Large
- Neck: 16"-19"
- Pets Weighing: 16lbs.-32lbs.
X-Large
- Neck: 19"-23"
- Pets Weighing: 33lbs.-45lbs.
XX-Large
- Neck: 23"-26"
- Pets Weighing: 46lbs.-70lbs.
XXX-Large
- Neck: 26"-31"
- Pets Weighing: 71lbs.-100lbs.
