| Size | Weight | Neck Opening | Base of Neck to Butt | Over the Back | Belly Strap |
|---|---|---|---|---|---|
| Extra Small | Up to 20 lbs. | 7" | 18" | 10-1/2" | 14" |
| Small | 20 - 40 lbs. | 9" | 19-1/2" | 12-3/4" | 14" |
| Medium | 40 - 60 lbs. | 9-1/2" | 24-1/2" | 13-3/4" | 14" |
| Large | 60 - 80 lbs. | 10-1/2" | 27-1/2" | 16" | 14" |
| Extra Large | 80 - 110 lbs. | 10-3/4" | 33" | 17" | 14" |