| BACK..... | NECK.................... | CHEST - most important |
| Size 1 | 8" | 6-1/2 - 7-1/2" | 10-1/2 - 12" |
| Size 2 | 9-1/4" | 7-1/2 - 8-3/4" | 12 - 14" |
| Size 3 | 10-3/4" | 8-3/4 - 10-1/2" | 14 - 16" |
| Size 4 | 12-1/2" | 10-1/2 - 12" | 16 - 18-1/2" |
| Size 5 | 14" | 12 - 13-1/2" | 18-1/2 - 20-1/2" |
| Size 6 | 16" | 13-1/4 - 15-1/4" | 20-1/2 - 23-1/4" |
Back: Measure length of pet's back from the base of the neck to the base of the tail.
Neck: Measure the circumference of the pet's neck for a snug fit - not tight.
Chest Girth: Measure the broadest part of the chest and add 2" for ideal fit.
Note: If the dog has a stout build, select one size larger.
