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

X-Small

• Back Length: 8.5"
• Neck: 9"

Small

• Back Length: 9"
• Chest: 15" (Most Important)
• Neck: 10"

Medium

• Back Length: 11"
• Chest: 17" (Most Important)
• Neck: 12"

Large

• Back Length: 13"
• Chest: 19" (Most Important)
• Neck: 13"

X-Large

• Back Length: 14"
• Chest Length: 22"
• Neck: 15"

XX-Large

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