Use a flexible measuring tape around your dog’s neck. You should be able to fit two fingers between the collar and your dog’s neck, so choose a size that provides at least one inch additional space. If your dog’s neck measurement falls between sizes, order the larger size.
XXX-Small: Neck: 6” - 9”, Collar Width: ½”
XX-Small: Neck: 9” - 12”, Collar Width: ½”
X-Small: Neck: 11” - 14”, Collar Width: ¾”
Small: Neck: 13” - 16”, Collar Width: ¾”
Medium: Neck: 15” - 18”, Collar Width: 1”
Large: Neck: 17” - 20”, Collar Width: 1”
XL: Neck: 19” - 22”, Collar Width: 1”
XXL: Neck: 20” - 25”, Collar Width: 1”