Size | Back (topline) | Chest | Neck | Weight |
XXS | 6 - 8" | 8 - 10" | 6 - 8" | Under 3 lbs |
XS | 8 - 10" | 10 - 14" | 8 - 10" | 3 - 6 lbs |
S | 10 - 12" | 14 - 17" | 10 - 12" | 6 - 10 lbs |
M | 12 - 14" | 17 - 20" | 12 - 14" | 10 - 15 lbs |
L | 14 - 16" | 20 - 23" | 14 - 16" | 15 - 20 lbs |