| Size | Weight | Neck Opening | Base of Neck to Butt | Over the Back | Belly Strap |
|---|---|---|---|---|---|
| Extra Small | Up to 20 lbs. | 9-3/4" | 20" | 12-1/2" | 14" |
| Small | 20 - 40 lbs. | 10-3/4" | 24-1/2" | 15" | 14" |
| Medium | 40 - 60 lbs. | 11" | 25" | 15" | 14" |
| Large | 60 - 80 lbs. | 11-1/2" | 27-1/2" | 16-3/4" | 14" |
| Extra Large | 80 - 110 lbs. | 11-1/2" | 30-1/2" | 17-1/4" | 14" |