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).
XX-Small- Back Length: 6.5″/ Chest: 10″ (Most Important)/ Neck: 7″
X-Small- Back Length: 8″/ Chest: 12″ (Most Important)/ Neck: 8.5″
Small- Back Length: 9″/ Chest: 14″ (Most Important)/ Neck: 10″
Medium- Back Length: 10″/ Chest: 16″ (Most Important)/ Neck: 11.5″
Large- Back Length: 12.5″/ Chest: 19″ (Most Important)/ Neck: 14″
X-Large- Back Length: 16.5″/ Chest: 23″ (Most Important)/ Neck: 16″
XX-Large- Back Length: 19″/ Chest: 26″ (Most Important)/ Neck: 19″
XXX-Large- Back Length: 22″/ Chest: 30″ (Most Important)/ Neck: 22″
