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 or restrictive design. 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 padded 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 padded 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, but without any added restriction in sewing or design.

This item is not intended to keep baby on their back or to prevent baby from moving their arms. This item does not “weigh” baby down, so please don’t be discouraged when baby can still engage in developmentally appropriate movements and rolling over. Swaddle Sleeves are only meant to provide your baby with a safe buffer as they transition out of the swaddle. Safety is and will always be #1 for us.

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 292 reviews
Tara Batey
Wonderful sleep sack

This was a wonderful purchase! The sleeves really help my baby not startle herself!

Love it!

Wonderful product and wonderful customer service. My little guy had a hard time coming out of the swaddle, especially with his reflex still. This settles his arms but still lets him go to his side and roll on belly if he wants to! Thank you for sharing your story and making a wonderful product to help families!

Happy baby!!

We have a very happy baby in her swaddle sleeves!! I began sleep training with this sleep sack and it has been a huge success! I upgraded to the 2.5 tog because my house tends to be colder in the wintertime and my baby is so warm and comfortable. Highly recommend as a transition from swaddle to sleep sack!

Baby approved!

She sleeps great in her sleep sack, and the mitten sleeves keep her arms and hands warm. We love it!

The best transition product

I couldn't recommend the swaddle sleeves highly enough! I wish I'd had this product for my first born - he loved being swaddled and the transition was a nightmare. We go the swaddle sleeves for our newest arrival, who also loved to be swaddled, and it was a complete different experience. He was able to self settle much more easily and slept through the night as per usual. Thanks umma for such a wonderful product!

Game changer!

Our little guy could no longer be swaddled but he was struggling with the transition to a sac. We didn’t want to do a weighted sac and a bit nervous using this one with the thicker sleeves but glad we gave it a shot. He started sleeping longer hours at night and kept from allowing him to wake himself up multiple times a night! Our little Michelin man appreciates this as much as we do!

Great transition swaddle

Swaddle sleeves really helped our little one get more sleep once we unswaddled her. Highly recommend this product!

Katherine B.
Swaddle Transition Concerns

I purchased the swaddle sleeves on recommendation from TCB. Our daughter was a decent sleeper in the Halo swaddle and I was extremely nervous to make the transition. She is 15w old and we have been using for about 3 days. We started with first using it at bedtime. This was dumb. Don’t do what we did. Start with naps. She didn’t sleep at all the first night. However, she caught on quickly. She had AMAZING naps the next day, but probably because she was so tired not sleeping at all the night before. However, after a couple more days, I can confidently say she sleeps as well as she did in the swaddle, maybe even a little better. I like that it’s easy to change her in it (we always change her before her dream feed so this aspect was important). I also like that she will probably have an easier time transitioning to just a regular sleep sack when the time comes. I also got the mitten sleeves and star sleeves and will try those out in a few weeks once LO seems to have her wild limbs under control a bit more. I was hoping this would make my baby sleep so well that we wouldn’t hear a peep from her between 7-7. So far that’s not the case but to have her sleeping at least as well as she did in the swaddle, and it doesn’t feel like we are going backwards at all, is really great. A tip that TCB said that seems to be work - if you transition her to the crib and her arms start really going, pin them down with your hands. She will fight you, but eventually she’ll give up and fall asleep.


We love it!! So worth the purchase!!

Tricia Christmas
Swaddle Sleeves Sack - quality, versatile product!

Our son moves a lot, all the time. The only way he slept was with a swaddle because his Moro reflex is strong. He’s started rolling over, so we can’t use our swaddle anymore. We use Merlin’s Magic Sleepsuit at night, which works great, but we only put him in socks and a diaper because it’s so warm. We wanted something less thick and constricting for naps so we didn’t have to take off his outfit for every nap. This sleep sack does the trick! The open sleeves allow him to chew on his hands for a little while, which he does to self-soothe before sleeping. We were hoping it would help him nap longer, but he doesn’t yet. This is still a great product that’s perfect for our warmer climate and we love the versatility of being able to take off the sleeves when he’s ready for that. The only issue I have is the sizing. We bought the 3-6 month size based on his weight and length, and it fits well right now (he’s almost 5 months), but he won’t be able to wear it once it’s too tight around his neck. We’re hoping he will transition completely to a sleep sack without the swaddle sleeves by that time, but I wish he could wear it longer since the price point is high.