Do Bamboo Pajamas Run Small? Our Honest Kids' Sizing Guide

The most common question we get from parents: do bamboo pajamas run small, and should I size up? Here's our honest answer, based on thousands of orders and a lot of real-kid testing.

The short answer: usually order true to size, size up if between

Bamboo viscose has natural stretch — more than cotton — so our pajamas move with growing bodies rather than binding. For snug-fitting sleepwear (which children's pajamas are designed to be, for safety), true to size works for most kids. If your child is between sizes, in the top percentiles for height, or you want longer wear, go up one size. Bamboo drapes rather than bunches, so a slightly big set still looks and sleeps fine.

Why pajamas fit snug on purpose

Children's sleepwear is fitted close to the body by federal safety standards — loose sleepwear is a flammability risk. So if bamboo pajamas feel more fitted than daytime clothes, that's by design, not a sizing error. The stretch in bamboo is what makes a safe snug fit stay comfortable.

Fit tips by age

Newborn to 24 months: convertible footies

Our convertible footie zippy pajamas run 0–3 months through 18–24 months. Buy the size matching your baby's age, and when feet start pressing the footie ends, fold the cuffs open and get weeks of extra wear- that's the convertible part. Fast-growing babies: buy the next size for the nursery drawer; you'll need it sooner than you think.

2T to big kid: two-piece sets

Our two-piece pajama sets run 2T through to 9–10) Waistbands are stretchy and forgiving; if pant length is right, the size is right. Potty-training toddlers: two-piece sets make midnight bathroom runs much easier than footies.

Care matters more than you'd think

Bamboo keeps its size when washed cold and tumble-dried low (or hung to dry). High heat is what shrinks and stiffens bamboo- avoid it and your pajamas will hold their fit long enough to hand down to the next sibling.

Still unsure?

Browse our full bamboo pajama collection — every product page lists specific measurements — or reach out through the site and we'll help you pick. We're a small family-run brand; a real person answers.