Zippy Size Chart

  Size   Height Weight
Preemie Up to 18" Under 8 LBS
Newborn 18-22" 8-12 LBS
0-3M 21-25" 12-15 LBS
3-6M 24-27" 15-18 LBS
6-12M 26-30" 18-22 LBS
12-18M 29-32" 22-26 LBS
18-24M 31-34" 26-30 LBS
2T 33-36" 30-32 LBS
3T 36-39" 32-35 LBS