All about sizing

Choose the chart for your style. Check measurements before ordering; items purchased at 50% off are final sale.

Kids’ long pajamas

Our children’s pajamas are designed for a snug fit. These are garment measurements in centimeters, not body measurements. Lay a well-fitting pair flat and compare the top length, chest width and pants length. Chest width is measured across the garment, not around the body.

Kids’ long pajamas — garment measurements (cm)
Size	Top length	Chest width (flat)	Pants length
1	36	26.5	45
2	38	26.5	52
3	41	28	55
4	43	29	58
5	45	30	61
6	47	31	64
7	49	33	68
8	51	36	71
10	54	38	77
12	58	39.5	85

Open the full kids’ chart, including inches and measuring diagram ↗

For short pajamas or help between sizes, ask us about your chosen style.

Baby onesies & rompers

Use the weight guide below alongside the size and fit of the baby’s current clothing.

Age range	Weight (lb)	Weight (kg)
0–3 months	Up to 11	Up to 5
3–6 months	12–15	5.4–6.8
6–9 months	15.5–19	7–8.6
9–12 months	19.5–23	8.8–10.5

Open the original baby size chart ↗

Women & adult loungewear

Our adult loungewear uses a classic French pattern and runs small. Please compare the garment measurements in the chart before selecting your size.

Women’s pajama garment size chart; open to zoom

Open the adult chart at full size ↗

Need a hand? Email customer service with the style and measurements you are comparing.

More about snug fit & other styles

Why are our children pajamas snug-fitted ?

Petidoux, [pronounced: Peh- tee-doo] pajamas are snug-fitted because we strictly follow US regulations on children sleepwear flammability standards to protect our little ones.

C.F.R. Parts 1615 & 1616, states that " children pajamas must be flame-retardant or snug-fitted".

We make our pajamas snug-fitted in order to offer our customers the softest natural fiber.

Our luxuriously soft Pima cotton, without any chemicals or synthetics, comply with snug-fit measurements put in place by the US Consumer Product Safety Commission.

Although it may be necessary to size up for most children, you can be certain that your child is safe in our sleepwear.

We would happy to help you choose the perfect size for your little ones, please do not hesitate to email us at [email protected]

What is the purpose of the children’s sleepwear flammability standards?

To protect children from burns, these rules require that children’s sleepwear must be flame resistant and self-extinguish if a flame from a candle, match, lighter or a similar item causes it to catch fire. The rules cover all children’s sleepwear above size 9 months and up to size 14 and require that

- the fabric and garments must pass certain flammability tests; or

- be "tight fitting" as defined by specified dimensions

Please do not hesitate to contact us via email at [email protected] or call us in our Manhattan offices during regular business hours on 646-494-5414.

Baby Alpaca Home slippers

Handmade in Peru with real baby alpaca hair, Petidoux's baby slippers are very plush & super fluffy and therefore run small.

Always size-up when in doubt...