Size | Neck Size | Back Length | Chest Girth |
---|---|---|---|
X-Small | 6.8 inches | 6 to 9 inches | 15 to 18 inches |
Small | 8 to 10 inches | 9 to 12 inches | 18 to 21 inches |
Medium | 10 to 12.5 inches | 14 to 18 inches | 21 to 24 inches |
Large | 12 to 15 inches | 20 to 24 inches | 23 to 26 inches |