Size XS
Chest Girth: 8"-13.5" in / 12,7-24,1 cm
Neck Girth: 5.0"-9.5" in / 20,3-34,3 cm
Recommend Weight: 6lbs
Size S
Chest Girth: 13.0"-20.0" in / 15-43,2 cm
Neck Girth: 6.0"-17.0" in / 33-50,8 cm
Recommend Weight: 6-25lbs
Size M
Chest Girth: 20.0"-26.5" in / 30,5-47 cm
Neck Girth: 12.0"-18.5" in / 50,8-65,8 7,3 cm
Recommend Weight: 25-50lbs
Size L
Chest Girth: 29.0"-33.5" in / 48-64,8 cm
Neck Girth: 19.0"-25.5" in / 73,7-85,1 cm
Recommend Weight: 50-70lbs
Size XL
Chest Girth: 32.0"-38.0" in
Neck Girth: 24.0"-30.0" in
Recommend Weight: 60-80lbs