X Small
0-20” Height / 18” Waist / 17.5” Chest / Up to 7lbs

Small
21-24” Height / 18.5” Waist / 18” Chest / 7-12lbs

Medium
24-27” Height / 19” Waist / 18.5” Chest / 12-18lbs

Large
26-30” Height / 19.5” Waist / 19” Chest / 18-23lbs

X Large
29-33” Height / 20” Waist / 20” Chest / 23-27 lbs

XX Large
33-36” Height / 20.5” Waist / 21” Chest / 27-31lbs