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Best 9-12 Month Pajamas

Candace Osmond

At 9-12 months, your baby is on the go, all the time! They are probably crawling, walking, or trying to do either one. You want to find pajamas that are breathable and lightweight so they can easily move around. At this age, some babies will transition into two piece pajamas instead of just wearing onesies.

RankProductHighlights
#1Simple Joys by Carter’s Girls’ 6-Piece Snug Fit Cotton Pajama Set

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  • Size: 9-12 months 
  • Material: 100% Cotton
  • Closure: Pull Over 
  • Design: Bunny/Animals Green
#2Simple Joys by Carter’s Baby Girl’s and Toddler 3-Pack Snug Fit Footless Cotton Pajamas

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  • Size: 12 months 
  • Material: 100% Cotton
  • Closure: Pull Over 
  • Design: Dinosaur, Space, Rainbow
#3AVAUMA Pajama Set

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  • Size: 9-12 Months
  • Material: 95% Cotton, 5% Spandex
  • Closure: Pull On 
  • Design: Mustard Yellow Stripes
#4Feidoog Baby Boys and Girls’ Summer Short Sleeve Pajamas 

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  • Size: 9-12 Months
  • Material: 95% cotton, 5% spandex
  • Closure: Snaps 
  • Design:  Unicorn and Elephant
#5 Amazon Essentials Baby Snug-fit Cotton Footed Sleeper Pajamas

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  • Size: 9-12  months 
  • Material: 100% Cotton
  • Closure: Zipper 
  • Design: Striped
#6Lamaze Organic Baby Pajama Set

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  • Size: 9 or 12 months
  • Material: 100% Cotton
  • Closure: Pull On
  • Design: Yellow Lemons
#7The Children’s Place Baby And Toddler Boys One Piece Pajamas 2-Pack

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  • Size: 9 -12 months 
  • Material: 100% Cotton
  • Closure: Zipper
  • Design: 2 different designs with dino and frog.
#8Rene Rofe Baby Girls’ Pajama Set

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  • Size: 12 months
  • Material:  95% Polyester, 5% Spandex
  • Closure: Pull On 
  • Design: Unicorn and Mermaid

No matter what your little one is up to, you need pajamas that double as playwear and sleepwear. We have searched through tons of 9-12 month pajamas to pick out the ones we think are the best. We’ve included a ton of different styles, so you’re sure to find something that your baby will feel comfortable in. Not all pajamas are the same and not all of them will work for your baby’s individual needs. There are different types of fabrics, closures, material, design, and more.

At the end of our roundup, we’ve also included some of the top things you should consider when shopping for pajamas for your 9-12 month old.

Our Picks for the Best 9-12 Month Pajamas

We have compiled a list of the eight best 9-12 month pajamas that you can buy online. Read on to find the one that best suits your needs.

1. Most Versatile Pajamas for Girls – Simple Joys by Carter’s Girls’ 6-Piece Snug Fit Cotton Pajama Set

SPECS:

  • Size: 9-12 months 
  • Material: 100% Cotton
  • Closure: Pull Over 
  • Design: Bunny/Animals Green

At 9-12 months, your baby will be ready for pajamas other than the traditional onesie. This set from Carter’s comes with a six piece pajama set. These pieces mix and match featuring one long-sleeve top, two short-sleeve tops, one pair of shorts, and two pairs of pants with ribbed cuffs. This set features cute designs with bunnies and cute animals. 

The bottoms feature elasticized waistbands for easy on and off. The pants have banded cuffs and the crew necklines have a scalloped trim. 

Carter’s is a brand that is known for its quality, everyday low prices, and hassle-free packaging exclusively for Amazon members.

ProsCons
  • Six piece set to mix and match. 
  • No zippers or snaps to worry about.
  • Size up because the sleeves and ankles are tapered.

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2. Best Footless Pajamas for Girls – Simple Joys by Carter’s Baby Girl’s and Toddler 3-Pack Snug Fit Footless Cotton Pajamas

SPECS:

  • Size: 12 months 
  • Material: 100% Cotton
  • Closure: Pull Over 
  • Design: Dinosaur, Space, Rainbow

Your busy 9 to 12 month old is starting to pull-up or even might be walking by now. Footless pajamas help your baby push off of their feet to learn the first stages of walking. This three pack of footless pajamas from Carter’s is a must-have for your baby girl. You will get three long-sleeved fitted onesies in a soft and snug fitting cotton. There is a design with a rainbow, dinosaurs, and outer space with a feminine theme. 

There is an ankle to chin zipper for easy closure and fast diaper changes. You’ll never have to worry about your baby poking their face with the zipper because it tucks away with the snap-over tab. There are cute ribbed cuffs around the sleeves and legs. 

Carter’s is trusted for their quality, everyday low prices, and hassle-free packaging.

ProsCons
  • Comes in a pack of three with cute, feminine designs.  
  • Footless for walking and pulling up. 
  • Lightweight and breathable to keep the baby cool.  
  • It may fit too tight for some babies based on the fit.

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3. Best Pant Set – AVAUMA Pajama Set

SPECS:

  • Size: 9-12 Months
  • Material: 95% Cotton, 5% Spandex
  • Closure: Pull On 
  • Design: Mustard Yellow Stripes

This two piece pajama set is easy to wear and the perfect everyday set of PJs. They are comfortable and made from premium cotton. This fabric feels soft against your child’s delicate skin and is cool to the touch. 

This pattern is modern and simple with the stripes and mustard yellow color. There is a matching pair of pants and a long sleeve shirt. The fabric has enough give that they actually will grow with your baby so you can keep them longer than most pajamas.

ProsCons
  • No fussy zippers or snaps to worry about. 
  • Some of the tops can double as day wear.
  • Some users reported that they ripped after a few washes.

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4. Best Summer Pajamas – Feidoog Baby Boys and Girls’ Summer Short Sleeve Pajamas

SPECS:

  • Size: 9-12 Months
  • Material: 95% cotton, 5% spandex
  • Closure: Snaps 
  • Design:  Unicorn and Elephant

These are the best pajamas for boys and girls during the summer. They are short sleeves and short on the legs. They will keep your baby nice and cool in the hottest of months. The design is super cute too with elephants and unicorns. This set is cute enough to double as daytime playwear. 

This romper style pajama set has snap buttons around the diaper area to make diaper changes fast and easy. 

These pajamas are made from 95% cotton and 5% spandex. They are very soft and delicate against your baby’s skin. The detailed neck stitching leaves plenty of room to dress the baby without a big fuss.

ProsCons
  • Cute and fun design that your baby will love. 
  • Short sleeves and shorts for hot weather. 
  • Doubles as playwear.
  • The material may be too thin for some. 
  • Some of the sizing is not accurate.

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5. Best Snug Fit – Amazon Essentials Baby Snug-fit Cotton Footed Sleeper Pajamas

SPECS:

  • Size: 9-12  months 
  • Material: 100% Cotton
  • Closure: Zipper 
  • Design: Striped

If you’re looking for pajamas that aren’t thick, this is the one for you. Amazon Essentials has snug fitting sleeper pajamas that are lightweight and breathable. Let your baby sleep in style with this cozy and comfortable PJ set. These are marketed as snug-fit and that is what you want in a pair of children’s pajamas in terms of safety. 

The pajamas are footed and feature a zip-up front closure for easy fastening and removal.  They are made out of cotton and are light and breezy against the skin. Amazon listens to customer feedback and they then fine-tune every detail to ensure the proper quality, fit, and comfort. 

These pajamas are perfect for your new walker at 9-12 months because the feet have anti-skid to avoid slips and falls. Plus, they come in a wide striped pattern that is simple but cute and perfect for boys and girls alike.

ProsCons
  • Lightweight and breathable. 
  • Fun striped patterns. 
  • Non-slip footies.
  • Doesn’t lose its shape in the wash.
  • The material may be too thin for some.

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6. Best Organic Option – Lamaze Organic Baby Pajama Set

SPECS:

  • Size: 9 or 12 months
  • Material: 100% Cotton
  • Closure: Pull On
  • Design: Yellow Lemons

These pajamas are organic and eco-friendly from Lamaze. They are made with 100% GOTS certified cotton. Designed with pure organic cotton, grown and processed without using harsh chemicals or dyes and then produced in an oeko-tex certified facility.

You get a set of matching pants and a short sleeve top with a fun yellow lemon design. These feel super soft and extra gentle next to your baby’s skin. It is a wonderfully soft fabric that stretches and moves with your baby. There’s a tagless label that won’t scratch or irritate your baby’s delicate skin.

ProsCons
  • Made from organic cotton. 
  • Fun and bright design. 
  • No zippers or snap closures. 
  • Allows the baby to move around easily.
  • You may need to size up because these tend to run small.

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7. Best Romper Style Pajamas for Boys – The Children’s Place Baby And Toddler Boys One Piece Pajamas 2-Pack

SPECS:

  • Size: 9 -12 months 
  • Material: 100% Cotton
  • Closure: Zipper
  • Design: 2 different designs with dino and frog.

These are a must-have for the summer months or if your baby tends to run hot in their sleep.  These pajamas from The Children’s Place are so cute and stylish for your little baby boy. They come in a set of two zip-up romper style pajamas. They are short sleeved and short on the legs.  The pack comes with two different designs; allover dino print or allover frog print. 

They are made from 100% rib-knit cotton. These pajamas feel cool and breathable because there are no footies or long sleeves to fuss with. Ther zip up closure is perfect for being on-the-go or for fast diaper changes. You can machine wash these sleepers right in your washer machine for convenience. The pajamas should always fit snugly and not loose for safety.

ProsCons
  • Comes in a set of two. 
  • Perfect for hot weather.
  • Easy zip up closure.
  • Not the best option for cold weather.

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8. Best Pajama Shorts Set – Rene Rofe Baby Girls’ Pajama Set

SPECS:

  • Size: 12 months
  • Material:  95% Polyester, 5% Spandex
  • Closure: Pull On 
  • Design: Unicorn and Mermaid

These are the must have pajamas if you’re looking for a pajamas set with shorts and a t-shirt. These are officially licensed from Rene Rofe which is synonymous with style and comfort. Baby girls can dream of fantasy critters and magic rainbows in these sleep sets printed with cute faces and sayings including mermaids and unicorns. 

Your little one will enjoy lounging or snoozing in these lightweight pants made from super soft hacci fabric that stretches for comfort. They are durable PJs made with long-lasting materials and stitching that won’t fade or cause pilling in the wash. The soft and comfy fabric is just the right weight to keep your baby girl warm in the winter and cool in the summer. They are designed to offer plenty of room without being bulky while still having a snug fit. 

These PJs with novelty motifs make unique birthday and holiday gifts. Any infant or toddler would love to get a set of our playful pajamas.

ProsCons
  • Fun designs for girls. 
  • Shorts and shirt set with no closures to fuss with. 
  • Super soft fabric.
  • The fabric has a lot of pilling after washing.

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What To Look For in 9-12 Month Pajamas

As you can see, there are many different styles of pajamas available online for 9-12 month old babies. Here are a few things to consider when purchasing comfortable pjs for your growing little one

Is Baby Walking?

Your 9 to 12 month old is probably walking or at least pulling-up on furniture. Pajamas with footies can be slippery for new walkers. You’ll want to look for more traditional pajamas that come with pants and shirts at this age. However, footed pajamas are still helpful for keeping babies’ feet warm at night. 

The Material

Pajamas should be snug fitting on your baby. You don’t want material that is loose. Most pajamas are made out of cotton or a polyester blend to fit snugly against your baby’s skin. You want to be extra careful if your baby has skin allergies. In that case, an organic pair of pajamas is best. 

The Time of Year 

Depending upon the season, you’ll want lightweight pajamas for hot months and fleece-like material in the winter months. Also, take into consideration that your baby may run hot or cold no matter what season it is. It’s best to have a variety of fabrics since the indoor temperatures can vary. 

Closures or Pull-Over Pajamas?

9-12 month old babies are perhaps the most busy and squirmy of all. They can now start to wear pajamas with shorts, pants and matching shirts. You don’t want to spend extra time fussing with snaps and annoying closures. If you go for a onesie, we recommend zipper closures over snaps for ease of changing clothes and diapers. 

Conclusion 

Having a variety of different types of pajamas that double for playwear are a must for 9 to 12 month olds. We hope that you are now more informed about what to look for and have an idea of what is going to work for your 9 to 12 month old. Consider the material of the pajamas, the closure, safety features, the style, the sizing, how to wash them, and know your overall budget and how much you want to spend.

Photo credit: yifanjrb/Shutterstock