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).

Small

• Back Length: 10"
• Chest: 16"-17" (Most Important)
• Neck: 12"-13"

Medium

• Back Length: 11"
• Chest: 17"-18" (Most Important)
• Neck: 13"-14"

Large

• Back Length: 13"
• Chest: 19"-20" (Most Important)
• Neck: 14"-15"

X-Large

• Back Length: 16"
• Chest: 22"-23" (Most Important)
• Neck: 16"-17"

Big Dog X-Small

• Back Length: 17"
• Chest: 24"-25" (Most Important)
• Neck: 18"-19"

Big Dog Small

• Back Length: 19.5"
• Chest: 26"-27" (Most Important)
• Neck: 19"-20"

Big Dog Medium

• Back Length: 21"
• Chest: 28"-29" (Most Important)
• Neck: 20"-21"