Size Chart

  Neck Chest Weight
XXS 5-7"  8-10" 1-2lbs
XS 7-10"  10-12" 2-5lbs
S 11-13"  13-16" 6-10lbs
M 12 1/2-15 1/2" 16-19" 11-15lbs
L 15 1/2-19" 19-21" 16-32lbs
XL 19-23" 21-26" 33-45lbs
XXL 23-26" 26-31" 45-70lbs
XXXL 26-31" 31-36" 71-100lbs