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A Guide to Choosing the Right Type of Baby Pajamas

Sep 16, 2025 By SwaddleAn

New parents, welcome you to the diverse and wonderful world of baby sleepwear! We know it’s tempting to pick the cutest pajamas for our little angel. But choosing the right types of baby pajamas isn’t just for beauty. It decides your little one’s comfort and makes daily care much easier.

SwaddleAn will walk you through different types for different developmental stages, from convenient onesies to 2-piece pajamas. By understanding their benefits and uses, you’re one step closer to the perfect baby pajamas!


Onesies & Bodysuits: The Classic Choice for Newborns

Most, if not all, babies have bodysuits or onesies in their wardrobes. Their one-piece design, combined with the snaps at the crotch, these onesies bring maximum convenience.

Types of baby pajamas: A dark gray onesie, which is the classsic choice for newborns.
Onesies are a popular sleepwear choice for newborns.

Benefits of Onesies & Bodysuits

  1. Easy diaper changes: The snaps at the crotch allows you to change the diapers without taking off all the clothes. This convenience also minimizes movements that can startle your little one when they’re sleeping.
  2. Keeps the tummy warm: With two-piece sleepwear, the shirt can ride up easily. However, onesies always ensure a snug fit without revealing your baby’s tummy and back, keeping them warm.
  3. Versatile: Your baby can wear onesies alone on warm days or as a cozy base layer on chilly days.
  4. Multiple options: You can find many designs on the market, from long-sleeved bodysuits for winter to sleeveless ones for summer.

When to Use Onesies & Bodysuits?

Onesies are the ideal pajamas for babies from newborn to about 1 year old. They are parents’ handy tools during the baby’s first months in life, when they need frequent diaper changes.


Footie Pajamas & Sleepers: Keeping Warm from Head to Toe

Also called sleepers, footed pajamas are one-piece pajamas with feet. This is an all-in-one solution to keep your baby warm all night long.

Baby in a footies pajamas. This types of baby pajamas offer full-body warmth.
One-piece baby pajamas with feet offer full-body warmth.
  1. Full-body warmth: Since the feet are attached to the pajama, you don’t have to worry about socks slipping off. Your baby’s tiny feet also won’t get cold at night.
  2. Safety: The one-piece design eliminates the risk of loose blankets covering the baby’s face, which follow the safe sleep guidelines.
  3. Convenience: Many sleepers come with two-way or inverted zippers. This means you don't have to fumble with snaps or take off the entire pajama when changing diapers.

Tips for Choosing Footie Pajamas

Look for pairs with non-slip grips on the soles, perfect for babies who are learning to walk. Want to explore more styles and benefits? Explore SwaddleAn’s in-depth guide to footie pajamas and sleepers.


Baby Pajamas Set (2-Piece): A Step Towards Independence

When your little one grows bigger and more active, 2-piece pajama sets are a great stepping stone to more independent growth.

Benefits of Baby Pajamas Set

  1. Encourage independence: With a two-piece pajama, you can teach your baby to put on and take off their clothes easily. You can start with the shirt, then the pants.
  2. Support potty training: It’s much easier to pull off the pants compared to a one-piece pajama.
  3. Flexible mix and match: Having a two-piece pajama means you have two separate items to mix and match in different outfits.

When Is It Appropriate to Switch to Pajama Sets?

Normally, babies from 18 months old can start using two-piece pajama sets. Learn more about how to choose and when to transition to two-piece pajama sets here!


Babydoll & Rompers: Stylish and Active for Summer

Two SwaddleAn's baby rompers. This types of baby pajamas is stylish and active for summer.
Rompers and babydoll pajamas are cute summer sleepwear.

Rompers are the summer version of onesies, typically with short legs and short or sleeveless arms. This design ensures optimal comfort and coolness. They also benefit you and your baby in many ways:

  1. Cool and breathable: Rompers and babydolls are the ideal summer outfits, especially for little heavy sweaters. They keep your baby cool even on scorching days.
  2. Stylish: This type of sleepwear comes in many cute designs and patterns, suitable for sleeping, playing, and outing.
  3. Easy to move: The roomy design allows your little one to move, crawl, and play freely and comfortably. 

Looking for the cutest and most convenient designs for your baby? Don’t miss out on SwaddleAn’s latest rompers and babydoll pajama collection!


Blanket Sleepers & Wearable Blankets: Key to Safe Sleep

Blanket sleepers are like wearable sleeping bags with sleeves, worn over regular pajamas. They keep your little one warm without the need for loose blankets. Even better:

  1. Safety first: They greatly reduce the risk of SIDS since there are no loose blankets in the crib.
  2. Consistent warmth: Babies can’t kick them off in the middle of the night and get cold.
  3. Sleep routine helper: Putting on a blanket sleeper can become a cozy signal that it’s bedtime.

Want to know how to pick the right thickness (TOG rating) and explore more benefits? Take a look at our detailed guide to blanket sleepers and wearable blankets.


Which Types of Baby Pajamas Work Best?

There’s no one-size-fits-all answer. The best choice depends on your child’s age, activity level, the climate where you live, and your own preferences. By understanding the strengths of each option, from onesies to pajama sets, you’ll feel confident choosing the baby pajamas.

Ready to give the little one sweet dreams? Shop our baby pajamas now for your baby's safe amd comfy sleep!

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