Size Guide

How we measure: Garment measurements are taken with the pajamas laid flat and unstretched. Garment length is measured from the back of the neck to the bottom hem with the convertible foot cuff open in romper style. Sleeve length is measured from the neck to the end of the cuff.

Our Pjs are designed to fit snugly while allowing room for growth in length, with stretchy fabric and convertible features that help extend the wearable fit.

Zippy pajamas size guide

Size Child Height Child Weight Garment Length Sleeve Length
NB 18–21" 5–8 lbs
0–3M 21–25" 8–12 lbs 22" 11.5"
3–6M 23–28" 12–17 lbs 23.5" 12.5"
6–12M 27–31" 17–23 lbs 27" 14"
12–18M 31–33" 23–26 lbs 28.6" 15"
18–24M 33–34.5" 26–30 lbs 31" 16"

 

 Two-piece pajamas size guide

Size Height Weight
2T 33–35" 28–32 lbs
3T 35–38" 32–35 lbs
4T 38–41" 35–39 lbs
5–6 42–48" 39–48 lbs
7–8 48–54" 48–69 lbs
9–10 54–57" 69–87 lbs

 

Important Safety Note: This size guide serves as a general reference only. To comply with federal safety regulations our pajamas are intended to be worn snug fitting. Our pajamas are not flame-resistant and have not been treated with flame retardant; a snug fit is necessary to ensure your child's safety. Please take this into consideration when making a size selection and choose the size that most closely matches your child's current measurements.