S --Neck:11" chest:10"-12" Back Length:7" Fits dogs 2-5 lbs.
M --Neck:13" chest:13-14.5" Back Length:9" Fits dogs 5-8 lbs
L --Neck:13.5" chest:14-15.5" Back Length:10" Fits dogs 8-10 lbs
XL --Neck:14.5" chest:15-16" Back Length:12" Fits dogs 10-15 lbs
XXL --Neck:15.5" chest:16-17" Back Length:15" Fits dogs 15-18 lbs
PLEASE NOTE: Please make sure to measure your dog for accurate sizing before purchasing to ensure the perfect fit. Don't worry the size run small, please choose via weight or measurement Your baby usually wears size S doesn't mean all size S will fit him/her. If any of the measurements are 'between' two sizes, choose the larger size.
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