Natural Fleece Baby Pajamas

posted in: Clothing | 17

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Natural Fleece Baby Pajamas

When I stopped swaddling my son, I needed to find very warm natural fleece baby pajamas for him very quickly.


The first time I did not swaddle him, I put cotton pajamas and a cotton sleep sack on him instead. To this day (over 5 years later), I remember vividly how icy cold his little hands were when I got up in the middle of the night to nurse him. I was not going to make that mistake again and looked frantically for very warm natural fleece baby pajamas.


To my dismay, I quickly learned that in this modern world, “fleece” is made of polyester.


I did not want to buy polyester fleece baby pajamas for multiple reasons.


Why I did not want polyester fleece baby pajamas


  • Polyester pajamas do not do a great job of regulating body temperature, and so they may overheat your baby.


  • Polyester pajamas are not breathable.


  • Most likely, polyester fabric contains flame retardant chemicals. Read more about that below.


  • Polyester fabric may contain other undisclosed toxic chemicals such as formaldehyde.


  • Most polyester is made from petroleum, which is an unsustainable resource.


  • Fleece sheds microfibers each wash and they travel to your local wastewater treatment plant, where up to 40% of them enter rivers, lakes, and oceans. These microfibers are particularly dangerous because they have the potential to poison the food chain.  In one study, human-made debris recovered from fish in the US consisted primarily of micro fibers. (source)


Flame Retardants in Baby Pajamas


Let’s briefly talk about flame retardant chemicals and why they are in baby pajamas.  In the 1970s, the Federal Government adopted a flammability standard requiring children’s pajamas (for kids between 9 months and 14 years) to withstand a 3-second open flame test without igniting.


Many baby pajamas manufacturers decided to add brominated tris flame retardant – up to 10% of the fabric’s weight – to make sure that their products passed the flammability test.  Two Green Science Policy Institute scientists, Arlene Blum and Bruce Ames, published the results of their research into brominated tris.  They discovered scientific evidence that this flame retardant chemical is a DNA mutagen and carcinogen.  As a result of their research, brominated tris was banned from baby pajamas in 1978.


Unfortunately, brominated tris was replaced by chlorinated tris, but that was eventually phased out, too.  Thus, chlorinated tris and PBDE are not used any more due to health concerns; however, other supposedly less toxic flame retardants are currently used.


There is no requirement in any state (even in California) to disclose what flame retardant chemicals are used to treat baby pajamas.


Natural Fleece Baby Pajamas Options


With that out of the way, let’s talk about natural fleece baby pajamas options on the market.


When I wrote the original Natural Fleece Baby Pajamas post I was unable to find natural fleece baby pajamas at first and bought a wool sleep sack instead on Amazon. The sleep sack is no longer available but it looks similar to this one.


I did not like that much – it was not soft enough. I do not recommend it now because babies can have allergies to wool if it touches their skin.


At some point, I bought Cosilana organic wool pajamas, but they were also not soft enough, the legs were short, and when washed with warm water, it shrank.


After a very long and frustrating search, I was excited to find natural fleece baby pajamas that I liked a lot. They were so soft and fuzzy inside. However, they were discontinued so you can’t buy them now. Here is a picture of them. Keep reading because I have a pleasant surprise for you.

natural fleece baby pajamas

I also tried organic pajamas made by Snug Organics. They are very warm and well made but they are a little too snug fitted, have no feet, and they shrank when I put them in the dryer.


The Warmest Organic Sleep Sack


Even with the warm natural fleece baby pajamas, I ended up needing a warm organic sleep sack.  I have tried a few different sacks and the warmest one I found is the cotton sleep sack by Ergo Pouch.


Its warmth comes from the fact that it is made like a quilted blanket with organic cotton filling.  The product description says that it is designed to keep a baby warm at temperatures as low as 57F.  I do not think that my son would still be warm at that temperature, but he was a Californian baby, and maybe he would have been if he had a hat and gloves on.


Ergo Pouch is an Australian company and if you buy from them directly, shipping is very expensive. However, from time to time they are sold on Amazon. And that is where I bought them. They were lifesavers.


This organic sleepsack comes in two sizes: 2 months-12 months, and 12 months -3 years, which means that you only have to buy it twice.





Natural Fleece Baby Pajamas by CastleWare


When my son was about 2 years old, one of my blog readers asked me (you can actually see her comment below) if I could recommend a sleep sack with leg holes, and in my search for them I stumbled upon on CastleWare sleepwear. (You can read my review of their wearable blanket here.)


Since then, CastleWare has become my favorite brand. I wrote a lot of reviews of their products, which you can see below. It is a true brand of luxury – every item is impeccable. They now make organic pajamas and wearable blankets in three fabrics – rib knit, fleece, and velour.


All CastleWare products are made of 100% GOTS (Global Organic Textile Standard) certified organic cotton fabrics.  GOTS ensures that not only the cotton is organic, but also that the entire supply chain (processing, manufacturing, packaging, labeling, trading, and distribution) is environmentally and socially responsible.


CastleWare is an all-American business. The organic cotton used by CastleWare is grown in Texas; spinning and knitting are done in South Carolina; and sewing is done in California.


The natural fleece baby pajamas by Castleware remind me a lot of the first natural fleece baby pajamas that I found and that were discontinued. The fabric is the same but the cut is better. The legs are longer and sized more generously.


In fact, because my blog followers loved CastleWare products so much, it motivated Maureen, the owner of the business, to make natural fleece baby pajamas in sizes 5T and 6T, and expanded her assortment of colors and fabrics. It feels so great to be able to contribute to expanding a small business with all stages of production done in the US.


Here is what my blog followers said about CastleWare products.

Organic Natural Fleece Baby Pajamas


Natural Fleece Baby Pajamas

In sum, your baby will sleep in luxurious, organic, flame retardant-free sleepwear and your purchases won’t be polluting the environment and coming back and haunt us at our dinner tables. You will sleep better, too!


Where to buy CastleWare Sleepwear

CastleWare website


To Read More about CastleWare:

Cotton Footed Pajamas for Family Goodnight Sleep

Organic Cotton Velour Sleep Sack with Leg Holes


Natural Fleece Baby Pajamas Organic

Free 5-Day Healthy Baby Registry Email Course

5 day healthy baby registry ecourse

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17 Responses

  1. carmel

    I was just wondering what kind of pjs you plan to get your baby now that he’s outgrown sleep sacks. I’ve been looking for something warm for my 16 month old. Seems like there are only 2 or 3 super pricey options available.


  2. Kristina

    Very excited to find your blog. Reading labels is so much work, its nice to find more resources to help with this monumental task when trying to buy things safe for your kids and the environment. To answer the one posters question; as my kids have gotten older, I just buy organic cotton pajamas. I find that even here on the east coast, my kids don’t want to sleep with blankets and those keep them plenty warm. I buy all my cotton PJs off of Every so often they have organic pjs on sale and its the only way I can afford them. And as long as they don’t eat breakfast in them they last at least two nights so I only need to buy a few pairs per child. I’ve purchased from three different companies and have been very pleased with the; they are all high quality, thick and sturdy snug pajamas.

  3. Suzie

    I have recently learned how cruelly animals are treated whether it’s sheep for their wool, duck for their feathers, cows for their leather and so on. These animals suffer so much and are abused and treated horribly by the people who handle them. I no longer purchase anything that comes from an animal. I wasn’t sure if you’re aware of this and just ask to look into it and possibly reconsider suggesting wool or other products that come from animals.
    PETA has a lot information and videos. I cannot watch these videos and can barely look at the pictures as they are very disturbing.
    Thanks so much,

  4. E

    Chemicals are also a serious concern to me, but in this era of international trade, I find it easy to go around: I buy my sleepwear from non-US sources (as an example and being French: say, from with keyword “pyjama”), to ensure healthier options. Note that a lot of “safe” options in the US (pajamas, sleep sacks, etc…) still contain chemical treatment. If a label has an elusive “garment has not been treated” (a.k.a. dipped into chemical), it remains that its fibers might still have been treated (fiber treatment is supposedly less hazardous than garment’s) to pass the flammability test. Kind thoughts. E.

    • Irina Webb

      You are right in regard to polyester. Even if polyester is not treated with flame retardants, the fabric may be weaved with flame retardants. Thanks! ~Irina

  5. Wendy

    I am curious if you have heard anything about Halo Sleepsacks. According to their website FAQ regarding this issue, they state:

    “Is the HALO SleepSack wearable blanket chemically treated with flame retardant chemicals?
    NO. The fabric and fibers used to make our garments are not chemically treated in any way.”

    True, or have you researched otherwise?


    • Irina Webb

      Hi, Wendy: Baby sleep sacks are considered bedding and thus do not have to meet the federal flame retardant standard (16 C.F.R. Parts 1615 and 1616) as baby pajamas do. However, polyester sleep sacks might still have flame retardant chemicals built into polyester fabric during the manufacture of the polyester fabric. Therefore, if you ask the sellers whether their polyester sleep sacks are treated with flame retardant chemicals, they may tell you “no” and they may be right, but this does not ensure that the sacks are truly flame-retardant free. I believe Halo sleepsacks are made of cotton. Is that correct? ~Irina

      • Wendy

        Hi Irina. Thanks for your reply!

        That is interesting that they’re considered bedding. The child still wears them !! 🙂

        Not all Halo Sleepsacks are cotton. Some of them are 100% polyester micro-fleece

        Because of the fact that their FAQ states that the fabric AND FIBERS in “our garments” are not chemically treated, it leads the reader to believe that none of their sleepsacks have flame retardants. Hopefully that is not just wordsmithing in some way 🙂

        • Irina Webb

          Hi, Wendy: I know polyester is so tricky. We are not told what is really in it. We can only make educated guesses. Are you considering buying their cotton or polyester sleep sack? I have some favorites… My baby is 4 years old now but I still remember the time I was desperately looking for sleepware to keep him warm and cozy after he could be swaddled anymore. I wasted lots of money. ~Irina

          • Wendy

            I actually had ordered the polyester one but ended up returning it. I was going to get a cotton one but then I realized that Halo actually doesn’t have cotton at all for the one that I want!

            I am interested in the “Early Walker” line because they have foot holes. My daughter is 19 months and on top of being a walker, she REALLY needs to be able to stretch her legs out fully and move around. She doesn’t like being enclosed.

            Do you know of any similar cotton ones that are somewhat lightweight? I live in California in the Bay Area. It never gets super cold, but cold enough where I feel she needs another light layer.


  6. Msmomma

    Halo states their cotton sacks can only pass flammability standards at the smaller sizes. This is why the larger ones are polyester which is exempt from flammability standards. Search CPSC standard of clothing and textiles under flammable fabrics for additional info. We still don’t really know what is in them but we do know polyester melts and cotton burns.

    • Irina Webb

      Hi, Katie: I can’t remember off top of my head. I would have to do some digging. Why do you ask? By the way, CastleWare started making fleece pajamas a little over a year ago with the same fabric and the cut is even better. ~Irina

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