Designed To Fit Longer ✨

Zippy Pajamas Size Guide

Our signature bamboo fabric is naturally soft, stretchy, and designed for longer wear, helping your little one stay cozy through more growing moments.

Extra stretch for growing babies
Buttery-soft bamboo comfort
Designed for longer wear
Size Best Starting Fit Many Families Wear Through* Weight Range
Newborn (NB) Preemie - Newborn Up to 2M Up to 8 lbs
0-3M Newborn - 2M Up to 6M 8-12 lbs
3-6M 3-5M Up to 9M 12-16 lbs
6-12M 6-10M Up to 18M 16-22 lbs
12-18M 12-16M Up to 24M 22-27 lbs
18-24M 18-24M Varies by fit preference 27-30 lbs

*Fit can vary based on your child’s height, growth pattern, and preferred fit. Our bamboo fabric is designed with extra stretch for longer wear.

Between Sizes?

  • Prefer a snug fit? Choose their current size.
  • Want extra room to grow? Size up.
  • Our stretchy bamboo fabric is designed to grow with your little one.

Fit & Fabric Notes

  • Made from signature buttery-soft bamboo viscose
  • Snug sleepwear fit for safety and comfort
  • Fold-over cuffs on smaller sizes
  • Double zipper for easy changes