Length: Measure length of pet’s back from the base of the neck to the base of the tail.
| Size |
Length |
Weight |
| 10 |
10" |
3 - 8 lb |
| 12 |
12" |
8 - 12 lb |
| 14 |
14" |
12 - 17 lb |
| 14+ |
14" |
17 - 25 lb |
| 16 |
16" |
17 - 25 lb |
| 18 |
18" |
25 - 33 lb |
| 20 |
20" |
33 - 40 lb |
| 22 |
22" |
40 - 47 lb |
| 24 |
24" |
47 - 55 lb |
| 26 |
26" |
55 - 65 lb |
Note: size 14+ is designed to fit large chested breeds such 
