Measurements:

Size XS > Length: 8.75", Neck: 8.75", Chest: 13", Chest Girth: 11-13"

Size Small > Length: 10", Neck: 10", Chest: 15", Chest Girth: 13-15"

Size Medium > Length: 11.5", Neck: 11.5", Chest: 17", Chest Girth: 15-17"

Size Large > Length: 13", Neck: 13", Chest: 19", Chest Girth: 17-19"

Size XL > Length: 14", Neck: 14", Chest: 20.5", Chest Girth: 19-20"