The short answer
The print is the easy part. The neck label is what changes how you buy. All three santa christmas pajamas in this guide describe their kids' and babies' sizes as flame-resistant, so you follow the size chart and don't need the close-fit rule that governs snug styles. After that, three things narrow the choice: your child's age, how warm the bedroom runs and how they feel about the dark.
- Cold bedroom: red or green fleece, since both listings describe warm fleece.
- Heated bedroom: the black Santa hat and plaid knit, the one pick not described as fleece.
- Older child: green stopped at 8-9Y, red at 10-11Y, and only black reached 12-13Y.
- Under 3 months: none of these three, because baby sizes started at 3-6M when we read them.
- Uneasy in the dark: red or green, because the black set glows.
Order timing is covered in what size to get and when to order.
Which Santa Set Suits Which Child
Choosing Santa pajamas for kids comes down to size ceiling first and fabric second, because a print you love is no use if it stops two sizes short. Here is what the three listings said in early November. Stock moves daily, so confirm your size on the page.
| Set | Kids' sizes in stock | Baby sizes in stock | Fabric per listing | Care per listing |
|---|---|---|---|---|
| Black Santa hat and plaid, glow in the dark | 2Y to 12-13Y | 3-6M to 12-18M | 95% polyester, 5% spandex knit | Cold hand wash, lay flat to dry |
| Red Santa and Christmas tree fleece | 2Y to 10-11Y | 3-6M to 12-18M | Kids and baby: 96% polyester, 4% spandex | Machine wash cold, no bleach |
| Green Santa and candy cane fleece | 2Y to 8-9Y | 3-6M to 12-18M | 100% polyester | Machine washable; check the sewn-in label |
Santa hat glow-in-the-dark set, black top and plaid pantsShop now
Santa and Christmas tree print fleece family set in redShop now
Santa and candy cane print fleece family set in dark greenShop now
Each of these kids Santa pajamas is a family set, sold one piece at a time, so a sibling's size can sell out while the print stays listed. That matters most when your children sit far apart in age. A baby and a 12-year-old only overlap on the black set. Not every Santa set in the collection has baby sizes either, so check before you settle on one. Our three listings say a size may be a set or a romper, so read the option for your baby's size.
The black set needs one honest note for a child who wants Santa himself on the shirt. Going by its title and photos, it features a Santa hat with lettering and plaid pants. The red and green sets are the ones with Santa motifs in an all-over print, and in our view the green reads younger and the black reads older. A 10-year-old who has started rolling their eyes at Santa may accept a hat and plaid more readily than an all-over print.
Check the PatPat size chart rather than going by age, since the label names differ from single-set sizing. If you want pajamas for ordinary bedtimes through winter, our kids Christmas pajamas guide covers the snug bamboo viscose line. If the whole household is joining in, best family Christmas pajamas sorts sets by family structure.
Snug-Fit Safety: What Parents Need to Know About Overnight Sleepwear
None of these three picks is a snug-fit style, but you will meet both labels while shopping, and each one asks something different of you. Snug-fitting garments are an exception to the children's sleepwear flame test, and they still have to meet the general clothing flammability standard, 16 CFR 1610. This guide does not rank either as safer.
| What you see | What it tells you | What you do |
|---|---|---|
| Listing or label says flame-resistant | The garment takes the flame-test route, so a close cut is not how it complies. The black set's listing calls it loose-fitting | Follow the size chart. Follow the permanent care label too, since CPSC requires it to carry instructions that protect the flame resistance |
| WEAR SNUG-FITTING, NOT FLAME RESISTANT | The garment complies through its cut. CPSC requires this wording at the center back, right below the size, plus a yellow hangtag saying a loose-fitting garment is more likely to catch fire | Buy the true size, never a size up to get next year out of it |
| A size in months, nine months or under | A separate infant garment exception can apply, so these sizes may carry neither statement | Read the listing. Our three describe their baby sizes as flame-resistant |
Don't assume a route from the word "family" or "Santa." Cotton and bamboo family sets can take the snug route, so each listing needs its own read. We also read flame-resistant as a compliance route, not as a promise that fabric cannot burn. The flame rules are one layer, and what happens in the room that night is the other.
Five checks for the night itself
- Put flames out before bed, whatever the label says. CPSC's sleepwear guidance traces these standards to children burned at night and in the early morning, usually unsupervised, by household sources such as matches, lighters and stoves. A child who wakes at 5 a.m. to check on the cookies is that scenario. CPSC's holiday advice is to put candles out before leaving the room and use flameless ones where you can. Fireplace and candle setups are covered in the "Waiting for Santa" guide under Related reading.
- Feel for heat at bedtime and again before you turn in. Fleece in a heated house can be a lot. If a child's neck is damp, drop the socks first, then the room temperature, then the set. That order is our suggestion, so adjust it to your child.
- Take the Santa hat off for sleep. It is a photo prop. For babies, the American Academy of Pediatrics advises against hats indoors because of overheating, and says to dress a baby in one layer more than you are wearing. Sweat, a flushed face or a hot chest are its warning signs.
- Keep the crib plain. The AAP's advice stands on Christmas Eve too: on the back to sleep, with no pillows, blankets or soft toys in the crib. A stuffed Santa can stay for the photo and leave before bedtime.
- Walk the route to the tree. The red and green listings give full-length pants, and the black set's listing includes socks but says nothing about grip. Before the night, check hems and socks on your actual stairs. A child running downstairs in the dark is worth planning for, and the test costs nothing.
One small point for the red set: its listing mentions an adjustable drawstring. Check the kids' size on arrival, and if there is a cord, keep the ends short and tied.
Glow-in-the-Dark Santa Pajamas and Kids Who Dislike the Dark
Glow is a treat for some children and a problem for others, and you know which one you have better than any listing does. Everything in this section is editorial judgment. We did not test it on children and we have no data on how kids react.
The listing's instruction is simple: let the clothes absorb natural light before wearing them in the dark. Its animation shows the chest lettering lit, and it doesn't say how long the glow lasts, so don't plan around it as a night-light. To see it for yourself before the night, set the top by a window for an afternoon, keep the tags on and take it into a dark closet.
- Likely fine: a child who already asks for the lights off, or an older child who sees it as a trick to show a sibling.
- Could go either way: a 3- to 5-year-old. A child this age may not be able to tell you in advance that a glowing shape on their own chest will bother them at 2 a.m.
- Skip it: a child who currently needs the door open or who reports shapes in the room. This is not the week to test that.
If you buy it anyway, keep last week's pajamas within reach. Offering a quick swap in the dark, with no fuss, is what keeps a wobble from turning into a long night. For sharing a room, ask the sibling who has to look at it too.
Unwrapping Joy: Kids Santa Pajamas in a Christmas Eve Box
Keep the box small and let the pajamas do the work: one set, one thing to read and one note. Open it after the bath and before the story, so the new pajamas go straight on and the evening winds down rather than up. What you add should change with age, and CPSC's holiday guidance gives firm limits for the youngest.
| Age | Add to the pajamas | Leave out |
|---|---|---|
| Under 3 | A board book and a note for you to read aloud | Balls and toys with small parts. CPSC says to keep them away from children under three |
| 3 to 7 | A picture book and a note in Santa's handwriting | Deflated balloons, which CPSC says to keep from children under eight, and anything noisy |
| 8 to 13 | A paperback, or a card game for the morning | Anything that assumes they still believe, unless you are sure |
Two habits apply at every age. Follow the age guidance on anything you add, and throw away the plastic wrapping from the pajamas and the box the moment they are unwrapped, as CPSC advises. We would also leave candy out, since the box opens when teeth are about to be brushed. The black set's listing includes socks with each set, except the pet size, so don't buy a second pair for that one. The red and green descriptions don't mention socks, so check those listings before you count on a pair.
How to Keep the Size a Secret
You can get a size, check the fit and still keep the surprise. A parent's problem isn't asking, it's that children watch everything, and the methods below avoid both the tape measure and the question.
- Make height a game. Mark the door frame in early November, and it looks like a tradition instead of a shopping trip. Take the number to the size chart and buy what the chart gives.
- Don't copy the label from their current pajamas. Sizes differ by line and by brand, so a neck label only tells you where they are now in someone else's system.
- Check the fit while they sleep. When the parcel arrives, lay the new top over a top that fits them now, tags on, and compare shoulders and sleeve length. Repeat in mid-December for anyone under about five, since growth can change the answer.
- Handle the paperwork. Packing slips and order emails carry the size and the print, so recycle the slip and open the parcel after bedtime. A child who can read will read a shipping label too.
- Tell the older ones something. From about 10, the best surprise is often the print. Ask for a size and let them guess the rest, particularly if their size sits near the top of the kids' range.
Do the check on delivery day because of the return clock. PatPat's refund policy gives you 30 days from receipt, with items unworn and tags on, so a parcel delivered before November 24 is out of its window by Christmas Eve. Sale items can't be returned, and the policy doesn't offer a direct exchange: you return the item and make a separate purchase, so the size you want may be gone. On shipping, the shipping policy estimates 1 to 3 days of processing plus 2 to 5 business days within the contiguous 48 states, and longer for Hawaii, Alaska and Puerto Rico.
If the size is wrong on the night, keep it light. Tell them Santa guessed high, let them sleep in their old pajamas, and sort it out after the holiday. Do not put a child in a snug-fit style a size too big to save the moment, because that fit is how the garment complies.
Frequently asked questions
Are Santa pajamas for kids flame-resistant? Some are and some take the snug-fitting route, so read each listing and label. All three in this guide describe their kids' and babies' sizes as flame-resistant.
Is snug-fitting safer than flame-resistant? This guide does not rank either as safer. Snug-fitting styles are an exception to the sleepwear flame test and still have to meet the general clothing flammability standard, 16 CFR 1610.
Can a baby sleep in Santa pajamas? In a suitable baby size, yes, on their back with no pillows, blankets or soft toys in the crib, as the AAP advises. Leave any Santa hat for the photo, and watch fleece for signs of overheating.
Do glow-in-the-dark pajamas work as a night-light? We wouldn't plan on it. The listing says to let the clothes absorb natural light first, and it doesn't say how long the glow lasts.
Which Santa set works for a 12-year-old? Of the three here, only the black Santa hat set reached 12-13Y when we read it. After that, the next step is an adult size, where children's sleepwear rules no longer apply.
What goes in a Christmas Eve box for a toddler? The pajamas, a board book and a note you read aloud. Keep toys with small parts away from children under three, and throw away plastic wrapping right after unwrapping.
Related reading
- The "Waiting for Santa" Christmas Eve tradition, an hour-by-hour plan for the night
- Vintage Santa pajamas, on how to recognize the look
- Photo ideas with matching Santa Claus pajamas, including how to shoot a glow print
Check your child's size on the listing first, since a print can stay up after that size has gone. Shop Santa Christmas pajamas.
About this article
Written and fact-checked by the PatPat Editorial Team. How we research, source and review what we publish is set out on our editorial standards page.
Method. Product details, fabric lines, care wording and in-stock sizes were read from PatPat product pages and inventory in early November 2026, and return and shipping terms from PatPat's policy pages. PatPat sells these pajamas, the picks and the glow and bedtime advice are editorial judgment, and we did not wear-test any garment or test any set on children.
Sources. Sleepwear scope and care labels: CPSC, Children's Sleepwear. Label and hangtag wording, infant garments: CPSC, Infant and Tight-fitting Garments. Candles, small parts and wrapping: CPSC, Holiday Safety. Baby sleep, layers and hats: American Academy of Pediatrics, a parent's guide to safe sleep.
Last updated 6 November 2026 · Next review November 2027
