Important Sizing Note: The following measurements are the dimensions of the actual product, not of the pet they fit. After measuring your pet, make sure all measurements fit within the following dimensions (with a little room to spare in the chest and neck).

• Back Length: 8"
• Chest: 12"-15" (Most Important)
• Neck: 9"-11"
• Pets Weighing: 3lbs.-5lbs.

• Back Length: 10"
• Chest: 14"-18" (Most Important)
• Neck: 10"-12"
• Pets Weighing: 6lbs.-8lbs.

• Back Length: 12"
• Chest: 16"-20" (Most Important)
• Neck: 12"-14"
• Pets Weighing: 9lbs.-12lbs.

• Back Length: 14"
• Chest: 17"-21" (Most Important)
• Neck: 13"-15"
• Pets Weighing: 13lbs.-17lbs.

• Back Length: 16"
• Chest: 20"-24" (Most Important)
• Neck: 14"-16"
• Pets Weighing: 18lbs.-22lbs.

• Back Length: 18"
• Chest: 21"-27" (Most Important)
• Neck: 15"-17"
• Pets Weighing: 23lbs.-27lbs.

• Back Length: 20"
• Chest: 23"-29" (Most Important)
• Neck: 16"-18"
• Pets Weighing: 28lbs.-36lbs.

• Back Length: 22"
• Chest: 25"-31" (Most Important)
• Neck: 19"-22"
• Pets Weighing: 37lbs.-47lbs.

• Back Length: 24"
• Chest: 27"-33" (Most Important)
• Neck: 20"-23"
• Pets Weighing: 45lbs.-58lbs.

• Back Length: 26"
• Chest: 28"-36" (Most Important)
• Neck: 22"-28"
• Pets Weighing: 59lbs.-71lbs.

• Back Length: 28"
• Chest: 37"-39" (Most Important)
• Neck: 24"-31"
• Pets Weighing: 72lbs.-125lbs.

• Back Length: 30"
• Chest: 36"-42" (Most Important)
• Neck: 27"-34"
• Pets Weighing: 85lbs.-135lbs.