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 219 reviews
Jen Schov
Swaddle Sleeves Sack & Mitten Sleeves Set

We got this for my daughter to transition out of from her Ollie. We transitioned 4 days ago and she’s honestly done really well! I wanted to use the swaddle sleeves but since it’s summer and she runs so hot, I had to use the mitten sleeves. They’re a bit too big for her but she’s sleeping just fine with them on! I ordered the Star Sleeves Sack as well so that we could have the Star Sleeves as an alternative option. For reference, my daughter is just one week shy of 3 months old.

Victoria L

Our 3 month old starting breaking free from traditional swaddles and also started showing signs of rolling. I heard of this product from Taking Cara Babies and I’m so happy for the recommendation! I love how it came with different sleeve options - we are still using swaddle sleeves which really calms his startle reflex. And he can soothe himself back to sleep most of the time without me going in. You can also tell how quality the material is, and that it’ll last a long time. Love it!

Kari M.

We were looking for a transition swaddle since my daughter was breaking out her normal swaddle. She was out like a light the first night. I think she likes the ability to move her arms, but she doesn’t startle herself awake.

We can sleep again!

We were desperate after our daughter started rolling over and we couldn't use the magic Merlin sleep suit any more. This has worked great and given us peace that she can safely turn over, lift her head up, etc. Love that it's reusable as she grows. (We were with her in all of these pictures, so she was safe).

Gabriela Barton
Love our Sack & Mitten Set!

We started out using the swaddle sleeves for our almost 4mo old and they really do magically muffle the startle reflex! It was amazing! Our little one soon after started rolling over so we switched out the sleeves. We live in Phoenix, AZ and the fabric is nice and light so baby doesn’t get too hot.

Diana Sani

Helps to dampen my baby boy’s startle reflex and makes him sleep better at night. He can sleep in impossible positions. Plus, it’s super cute!

Game changer!

Our 3 month old started rolling over so we had to transition him out of a traditional swaddle and the transition was a nightmare. He used to almost always sleep through the night but with his arms out, he was constantly hitting himself awake and sucking on his hands. We found this product and it has been AMAZING! His movements at night don't wake him and he never puts his hand in his mouth anymore. Recommend for sure! And it's versatile. He'll use this for a long time!


My 10 week old started breaking out of the swaddle and I’d find it covering her face! Cue frantic search for a transitional sleep product since she still has a strong startle. Came across Two Baby Bears Swaddle Sleeves and loved the mobility it allowed as my little one loves to rub her hands on her face for self-soothing. It worked instantly and she’s sleeping better than ever now that she’s not fighting the swaddle. The Swaddle Sleeves have allowed her to continue to learn to fall asleep independently while staying safe and giving me peace of mind! Will definitely recommend to all my mama friends - they are a game changer!

Jenny B
Great transition out of the sumo suit

We have been using the magic merlin sleep suit for about the last 4 or 5 months with my 8 month old. He was starting to get more wiggly in his sleep plus growing out of the suits, so I needed something to help with the transition. The swaddle sleeves have been great. After using them for the last week, he has had no issues with the transition. He is sleeping great at night and during naps- possibly better than he was with the sumo suit! Thank you for creating this transition product.

First was weary now I’m CONVINCED!

My little one never took to a swaddle. When he started outgrowing the one we found at just 3 months I started panicking wondering what options I had that can grow with him. I found this product and wasn’t fully convinced padded sleeves would do much for him. I tried putting him down twice without this sack on him and he immediately stirred awake. So, I slipped the sack on him and rocked him to sleep again. Then I placed him in the crib and the padded sleeves soothed his flailing arms. This mama is convinced and so happy this product works so well for us and that it will continue to fit him as he grows!