Swaddle Sleeves Sack™ & Mitten Sleeves Set


Fantastic transitional product!

"As a baby sleep expert, neonatal nurse, and mom of 4, I recommend Swaddle Sleeves as a fantastic transitional product for babies."

-Cara, Taking Cara Babies

Highly recommend!

“As a pediatrician and a mother of two boys who had sleep issues, I highly recommend this product. [It] is wonderful to help with that transition and prevent awakening from normal reflexes. Swaddle Sleeves will help give everyone a good night's sleep!”

-Navneet Brar, Pediatric Emergency Medicine MD

Awesome product!

"My son started sleeping 6+ hours every night as soon as I started using these on him at 4 weeks old and that soon encouraged him to start sleeping 11+ hours!! They just kept him for doing the jerk reflex babies do. Awesome product I truly believe in!"

-Chelsea S., Customer

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How do Swaddle Sleeves work?

By using a strategic layering technique in our sleeves, we have created the same effect of dampening babies’ startles as they transition out of the swaddle that you’re used to with our products, but WITHOUT adding ANY weighting. The dampening effect is created through the air pockets in our inner polyfill layer. Similar to what’s found inside a higher TOG wearable blanket, our puffy Swaddle Sleeves do not restrict movement, but do provide just an extra bit of reassurance to your little one as they transition out of the swaddle.Another way to understand our proprietary layering method would be to imagine the puffy Swaddle Sleeves as being made of the same material of a wearable blanket with a higher TOG (thermal overall grade) rating, whereas our Mitten Sleeves would be classified as having a lower TOG rating.

Are all of the sleeves interchangeable?

Yes, all of our sleeves are interchangeable. For example, let’s say you purchase the Swaddle Sleeves Sack. With it, you get 2 sets of sleeves, our Swaddle Sleeves and Mitten Sleeves. You can use either one (most parents prefer to start off with our Swaddle Sleeves and then transition over to the Mitten Sleeves!), or you can also purchase our Add-On Star Sleeves, for example, if for some reason your sweet baby isn’t taking to the Swaddle Sleeves, without having to purchase a whole new product! As we grow, we’ll be offering bundle options for our sleeves, but currently, we only have our Add-On Sleeves as a purchase option so you can mix and match without having to buy a whole new product!

Are these products safe for sleep?

Our products have been designed according to the AAP’s (American Academy of Pediatrics) guidelines for safe sleep. Not only have we undergone certified third-party laboratory testing and surpassed the Consumer Product Safety Commission’s safety standards, we also partnered with pediatric physical therapists, pediatric nurses, and pediatricians throughout our development and design process to ensure that you and your baby are getting the safest, most effective swaddle product possible. Our products have been approved by global-wide safety standards and verified through Intertek and SGS Testing, both of which are world-leading inspection, verification, testing, and certification company.

At Two Baby Bears and Co., you can rest assured that we will always put safety first, as evidenced by the immediate disposal of our weighted inventory (at a huge financial loss to the company’s detriment) as soon as the updated AAP safe sleep guidelines were released in June 2022. We believe that transparency matters, and our relationship with our parents and customers is of utmost importance to us.

Why are all of the sleeves zippered and removable?

Because as parents ourselves, we know how difficult it is to buy a product and have it just not work for your baby, and then be stuck with it! That is why we provide two different sets of sleeves with our Swaddle Sleeves products and also give you the option of removing the sleeves entirely so that 1) in case the product doesn’t work out for your baby, you can still use it as a standard sleep sack/bodysuit/pajamas, and 2) to give you and your baby multiple options of how to use our product in case your baby doesn’t like it one way. This is also why we sell our “Add-on Sleeves,” and 3) for longevity of use! It’s no fun when you can only use a product for a set amount of time and once that time is over, throw it in the dresser drawer never to be seen again. We want you to get the most use out of our products and be able to use them long after you’re done with the swaddle transitioning stage! 

How do I know which product is right for my baby?

We wanted to make sure that our products were not only safe and functional, but also practical and easy to use for parents. Take our Product Quiz to find the perfect product for your baby!

Are sleep sacks with sleeves safe?

As long as the infant is dressed appropriately for the temperature, swaddles and sleep sacks with sleeves are perfectly safe. Since your baby can't exactly tell you how they feel, it's up to you as a parent to find the right room temperature and use your judgment with help from the AAP's guidelines for a safe and comfortable room temperature. The recommended temperature for babies is between 68 to 72 degrees Fahrenheit or 20 to 22 degrees Celsius. Experts recommend to check the back of baby's neck to see if your little one is warm instead of their hands or feet for a more accurate reading. Another helpful measure for temperature is to dress baby in just one more layer than what you are comfortable wearing. Finally, many of our sleeves come with an optional mitten cuff, so you have the option to leave the hands open or covered depending on your little one's comfort!

Customer Reviews

Based on 194 reviews

Absolutely love that baby’s arms can still move and bend but it totally muffles the startles! Our baby was never swaddled because she’s always liked her arms free. I ordered this when baby was 9 weeks because she suddenly became more aware of her movements/startle and was keeping herself up. Noticed a huge difference first night of use! 2 weeks later and we sleep through the night. Totally worth the money

Katie H
Great transition piece!

My baby is loving his swaddle sleeves! He loved to be swaddled so I was afraid of this transition, but he’s loving having his hands to play with! It seems to muffle the startle reflex just enough as well! I highly recommend!

Erica L.
Get This Sack!!

I transitioned my 7 month son from the Merlin suit to this sack with so much ease. It only took a few days, before a full week he wanted the sack and not the Merlin suit. My son tends to self soothe by chewing on sleeves so this sack was a great fit for him. I will definitely be buying more and I am so happy with the product!

Emily Keller
The Best

We have been using this for 3 days now! Nap times started out rough but they are getting better! However night time had been the same if not better since switching to this sleep suit! This was the best purchase to help us transition out of the swaddle! (We started right at 3 months)

Aimee George
Better nights!

We love the swaddle sleeve! After we transitioned from the swaddle to the sleep sack I was desperate one night when I was up for what felt like many times. After we started using this, my son now stopped startling and sleeps longer stretches through the night. Highly recommend

Erika M

I had a hard time getting my 4 month old out of a swaddle because he would flail his arms. He has been up once a night but other sleep sacks made it worse. He’s still up once a night but at least we are out of the swaddle. Overall, great product.

Ashley Elson

I wanted to give this a few nights before reviewing. We needed to transition our 3 mo old out of a swaddle which she has used since the day she came home. She slept SO good in the swaddle (typically waking once per night) so I was very scared about this transition. I found this on IG through a trusted nurse/sleep consultant and thought why not try it?

My baby girl slept just as great as she has been and she loves it. She can bring her hands up to sooth her in the night. She has been waking in the mornings and just lays there sucking her hands and coo-ing to herself rather than immediately crying. The weighted arms are weighted just enough to help with the reflex in the night to not disturb them but they are still able to move their arms to their face which I love. This product is worth the $$$. Buy it!!

Also, it can become a regular sleep sack but just unzipping the sleeves which I love bc this can be used far beyond the transition.

celina martins
It really works!

We were struggling without the swaddle, countless sleepless nights. It was a nightmare… when I came across this sleep sack with weighted sleeves, and It was a God’s sent. She has been sleeping through the night since.

Leilani Thomas
It’s a MUST!

We love our swaddle sleeve sack! We had to buy a second to have on hand. I love that I can help my daughters startle reflux, while being able to move freely, and have an easy way to change her diaper. This has allowed us to make a smooth transition out of her swaddle!


Swaddle sleeves are truly MAGIC. My 5 month old has been struggling with sleep ever since transitioning out of the swaddle. Her first night in swaddle sleeves… she went straight to sleep! I couldn’t believe it. Not to mention she’s slept so well every single night since we started using them. Swaddle sleeves are a life saver!!!!