Onesies, also known as bodysuits, are a staple choice for newborns and young babies. With Gerber having the rights to the term onesies it can get confusing as to why they are less commonly known but more often referred to as bodysuits. This style of baby clothes has been around for a long time and is now known as a staple baby item and one of the best and most used articles of clothing you will buy.

Baby onesies are a favorite option for many parents for several reasons. The most prominent of which is that onesies, unlike a typical t-shirt, keep your baby’s body warmer by reducing the risk of a shirt hiking up and exposing their sensitive skin. Bodysuits are also handy because they have snaps at the crotch which makes diaper changing much easier. Additionally, onesies typically have much larger head openings meaning as a new parent you don’t have to struggle to get a shirt over your baby’s delicate head.

Check out our list of 10 Best Baby Onesies below to find the ones that are perfect for your child.


How To Choose A Baby Onesie – Buying Guide

Buying a onesie for your baby should be a fun and easy task. The type of material used in making the onesie is an important factor to take into consideration as the onesie will be in direct contact with your baby’s skin for many hours of the day. We recommend having both long sleeve and short sleeve onesies on hand so you can have a proper selection suitable for the right weather. You can use the different onesies for layering or as your primary form of coverage. Onesies, even ones without leg coverings, are great for use in the colder months. Simply put on some leg warmers to maintain the easy access for diaper changes or layer them with a full pant to keep your little one nice and cozy.

Organic vs. Non-Organic Cotton

The key difference between organic cotton onesies and regular cotton onesies is the way the cotton is produced. Organic cotton is cotton that is grown and processed without any harsh chemicals, as opposed to conventional forms of cotton production. Conventional cotton production usually involves the use of toxic chemicals, dyes, and bleaches. Even while growing the cotton, the plants are often treated with pesticides and are grown from GMO seeds.

Onesies made from organic cotton are the best option for your baby if they have sensitive skin. These organic cotton onesies are incredibly soft against your child’s skin. Organic cotton also tends to hold up better regardless of how often you wash it making it a perfect option of material for your baby’s onesies. Organic cotton is also a better choice when it comes to the environment as it is often more sustainable, and it is farmer-friendly.  

Cotton vs. Cotton Blend Material

Cotton is the go-to material when you are looking for something that is both comfortable and durable, however, there are also many cotton blend options that are just as viable options. When you are purchasing baby onesies, if they are made from certain cotton blends may mean that they will be cheaper, e.g. cotton and polyester blends. However, other blends may offer different benefits, depending on the combination, whether it is a wool and cotton blend that may offer greater warmth or a cotton blend that includes some elastic that would offer greater mobility.

Overall, if you are unsure about which material to choose we recommend going for cotton as it will cover the basics of what you may need, however, if you are looking for something more specific there are plenty of cotton blend onesie options available on the market.


When choosing the fit for your baby’s onesie the key factor is to make sure that your baby will be comfortable while wearing the onesie. You don’t want to purchase a onesie that will restrict your baby’s movement or cause discomfort to them.

We recommend opting for onesies that feature designs that take comfort and movement into consideration whether these are elements such as a ‘no-pinch waste’ or ribbed leg openings, you want to make sure that the design of the onesie will not keep your baby from freely moving around or moving their legs. Another factor that will influence the fit of the onesie is the size, which is why we also suggest you always make sure to purchase the right size for your little one.


Selecting the correct size for your child’s onesie can seem like a difficult task as most parents will prefer to purchase one size up to make sure their baby can get the most out of the onesie. Our recommendation is to always read the size chart when deciding which size to purchase as different brands may have different sizing systems.

When purchasing baby onesies want to make sure not to purchase a size that is too small for your child as this will mean they cannot wear the onesie comfortably and it may restrict their movements. If you opt to purchase one size up there is a small chance that the onesie could be too loose for your baby, however, one thing you can be sure is that your little one will grow into it. If you are unsure about which size to go for, we always recommend reading through the reviews and question and answer sections as many parents will share their experiences with the product and the different sizes.


Choosing the right material is an important element to consider when choosing which baby onesie to purchase for your child. You want to opt for a material that is comfortable so that it won’t irritate your baby’s skin, especially since your baby will be in the onesie most of the day and most days.

However, you also want to go for a material that is durable enough to withstand being washed repeatedly as you will need to wash the onesies regularly to keep them clean. Our recommendation is to opt for onesies that are made from cotton or a cotton blend as they will be comfortable enough, while also being durable enough thereby offering the best of both.


When choosing which style of onesie you want to get, there are a couple of factors that are usually important to look for as they make for a more practical onesie. Onesies with lap shoulders or expandable shoulders are an excellent choice as they will make it easier for you to pull the onesie over your child’s head and shoulders when you are getting them dressed.

Another design feature to keep in mind are snaps along the diaper line or bottom of the onesie. These snaps can make it so much easier to change your child’s diaper on the go, wherever you may be without having to take all their clothes off.

You can also choose whether you prefer to purchase long-sleeved, short-sleeved or sleeveless onesies. We recommend having a few options of long-sleeved and short-sleeved onesies as they can be a great way to keep your child warm on cooler days or cool and comfortable on warmer days. Finally, most brands will have a range of colorful, patterned and fun options, as well as more simple options so you can choose the set of onesies that are the best for your baby.


Q. How Should I Wash Baby Onesies?

A. Most often baby onesies will come with instructions on how to best care for them. Wash the baby onesies according to the included instructions. Usually, baby onesies are machine washable so as to make it easier for you to clean your child’s clothes and have a set of clean onesies when needed. Some brands even have baby onesies that are both machine washable and dryable so you can keep your child’s onesies clean without having to worry about shrinking them in the wash. If you are searching for a practical option for you and your child, we recommend opting for either machine washable onesies or machine washable and machine dryable baby onesies.

Q. Should I Buy a Size Bigger?

A. Many parents choose to buy one size bigger when purchasing onesies for their babies. The reasoning behind this is that your baby will grow quickly, and it makes more sense to by one size up so they can grow into it and they can get more use out of the onesie. Our recommendation is to always check the sizing chart when purchasing a baby onesie. If you are unsure about whether a particular onesie will have enough stretch to accommodate your growing child or whether the sizes run smaller or larger it can be helpful to read the product reviews and question and answer sections where parents will often share details reading their experiences with the products sizing.

Q. When Is the Right Time to Introduce Onesies? 

A. You can introduce baby onesies into your child’s wardrobe from the start. Baby onesies are a great way to keep your child comfortable, warm and to protect their sensitive skin from the start. Many brands offer sizes that are suitable for newborns and even have sizes that are smaller and suitable for preemie babies so you can find the right onesie for your little one from the start. Onesies are a very practical option as they will let you quickly and easily change your baby’s diaper without needing to undress them. Because of this, many parents opt to use onesies from the start. 

Q. When Is the Right Time to Stop Using Onesies? 

A. The right time to stop using baby onesies is tied to around the same time you notice your child is ready to begin potty training. Once a child starts potty training, most parents opt to switch from onesies as the motion of pulling clothes up and down is an important element in the learning process of potty training. Since children won’t be able to unsnap their onesies on their own at such a young age choosing clothes that enable independence are a better option for encouraging them as they begin potty training.

My Babies Planet Overview 

Usually, finding the best baby onesie for your child isn’t going to be as easy as simply buying the first set you come across online or at the store. Most likely there will be many different options available and plenty of questions you will have to consider first. With our list of the 10 Best Baby Onesies in 2020, we wanted to give you all the information we felt you may need when it came to what to look for when purchasing baby onesies before you left your house so you can find the best set of baby onesies for your little one.

We hope you pick one of our recommendations on our list, however, we understand that ultimately, the set of baby onesies you choose will come down to personal preference.

More Baby Reviews:

My Babies Planet Baby Onesies Review

Baby onesies are perfect for the summer. I have bought the Set of 5 Bee Essentials Short Sleeve Bodysuits, 100% Organic Cotton by Burt’s Bees Baby and I am very satisfied. Great quality, fast dry, excellent price.
- Angela McGarity

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Hello Mother's and Father's of the world. My name is Sarah Nielsen is this is my passion, as I am a mother of two beautiful babies and they are my world. Also I love blogging and sharing my experiences of what has worked for me when raising my kids. When I'm not juggling the madness at home, or working on my blog. You will find me product researching and keeping the site freshly updated with the latest baby gear and helpful articles for my readers!