Baby Merlin's Magic Sleepsuit Transition Product - 3-6 Months Swaddle Transition Sleepsuit - Soft Cotton Material with Double

4.6 4.6 out of 5 stars | 20,334 ratings

Price: 39.95

Last update: 01-03-2025


About this item

The Baby Merlin's Magic Sleepsuit is the original swaddle transition product created by a Pediatric PT and mom of 4.
The Baby Merlin's Magic Sleepsuit has a soft jersey cotton inner layer, a soft breathable cotton outer layer and a layer of polyfill in between for just enough comfort. Also, available in cozy microfleece (Baby Merlin's Microfleece Magic sleepsuit)
The Baby Merlin's Magic Sleepsuit helps establish good sleep habits and provides parents peace of mind that their little one is getting adequate rest for proper growth and development.
The Sleepsuit is designed for back sleeping in the crib at the recommended room temperature for babies. Double zipper for easy in/out and diaper changes. Machine wash cold on gentle cycle with like colors, non-chlorine bleach as needed, tumble dry low or hang to dry. Do not iron.
Proper fit and timing of introduction of the Sleepsuit are critical to the safe and effective use of Baby Merlin's Magic Sleepsuit. Please refer to the sizing chart for the Sleepsuit

Product information

Technical Details


Top reviews from the United States

Ahndee Sohng
5.0 out of 5 stars Just buy it. Seriously.
Reviewed in the United States on March 6, 2022
Okay! So to start, I had a preemie baby that was in the NICU before coming home.

He was VERY picky & particular about sleeping. He hated being cold & loved feeling snuggled up in warm blankets. At the same time, he absolutely hated being swaddled and having his arms held down.

My husband and I struggled with both knocking him out AND making sure he stayed out. He would sleep the longest periods of time (about 3-4 hours in between) held by one of us. We were at the point of sleeping in shifts because if we were both awake at the same time, nobody was getting any sort of sleep.

Short of simply putting him in bed with us, we were kind of at a loss. (Nothing wrong with people that safely cosleep, but this little guy is bottle fed & we already went down that path with our first & didn’t want to repeat it a second time)

Enter Magic Merlin’s sleep sack. I had heard about the “magic” and seen photos of friends baby’s wearing the puffy marshmallow suit, but I honestly always thought it was just massively hyped up.
(In retrospect, I’m a moron & maybe if I’d tried it with my first he wouldn’t have migrated into my bed)

Does it work for every baby? Not sure. Did it work for MY baby? HELL YES.
MY GOD THIS SUIT KNOCKS THIS CHILD OUT FLAT ON HIS DIAPER BOOTY IN WHAT FEELS LIKE A MILLISECOND. INSTANT 5-6 HOUR STRETCH OF SLEEP FOR A 3 MONTH OLD (if you’re a parent ((you must be if you’re reading this)), you know any sort of sleep is the most precious thing ((I mean besides our sweet little poop machines that don’t let us sleep)) )

This thing is great. No, seriously. I let him show signs of being sleepy (simple yawning/rubbing face) and I change his diaper, slip him in the sack & lay him down in the bassinet. 9/10 I can walk away and he’s already falling asleep on his own. During winter my bedroom is around 64-70 and he’s always perfectly snug, not too hot and not too cold. We sleep him in a onesie, footie pjs and socks.

Is it perfect? No, but you gotta take a hit here & there. It’s pretty thick and does take a bit to dry when you wash it. The best thing here is to have 2, if possible. Another thing to note is I feel the suit does run a little small. I have the 3-6 months size but my child is 3 months & it’s pretty tight on him (he’s about 14-15 lbs). I definitely do not see this fitting him a month from now. While the double zipper in the front is very welcome for nightly diaper changes, I do still have to pull his leg up and out of the pant leg and this usually wakes him up if he’s drowsy or sleeping—as a result, I’ve begun to do diaper changes before sleepy feeds to avoid waking him up unnecessarily.

My sons head is a little flat from sleeping on his back, so we’re encouraging tummy time during the day whenever possible. He isn’t yet rolling over, but I believe the suit must get taken away once they are rolling over or attempting to while wearing it (?)

I also do not put the suit on unless I think he’ll want to nap longer than an hour or it’s time for bed at night. I do not want to restrict his movement throughout the day so I let him do his thing then.

So far, this suit has been an absolute lifesaver. I think if used as intended, chances are you and your child will have a great time.
It has helped my little one sleep longer stretches & be comfortable & warm. I’m not certain what to expect during the summer but I will probably sleep him in a onesie and diaper with the suit over.

This thing is great, if you’re struggling with baby sleep, it’s more than worth giving a try!
JLM22
5.0 out of 5 stars It really is MAGIC!
Reviewed in the United States on March 16, 2024
I cannot explain how amazing this sleep suit is! 5 sleepless nights of our LO fussing at bed time, moving all around the crib, crying for 45 minutes straight before falling asleep and the walking up restless every hour on the hour was cured by this suit! We give him his last bottle, zip him up and lay him in his crib and BOOM! 10-12 hours lates awakes a super happy and well rested baby boy! He lays flat & still as a pancake, stays warm and isn't restless anymore. This thing is worth it's weight in gold! Thank you MM!!!!
Lindsay M.
5.0 out of 5 stars Truly Magical!
Reviewed in the United States on April 16, 2024
Our baby loved her swaddle…until she didn’t. Around three months old, she started punching out of it at night and waking herself (and us) up. We tried several sleep sacks, but she couldn’t fall asleep or repeatedly kept hitting herself in the face. The Merlin suit has been a true lifesaver! It is easy to put on her and she clearly feels secure since she falls asleep without much fuss. Worth every penny!
Jonathan
5.0 out of 5 stars BUY THIS NOW
Reviewed in the United States on March 13, 2024
Did you have to stop swaddling your little one because they’re showing signs of rolling? Did you try using a standard sleep sack instead just to have them constantly startle themself awake? Buy this RIGHT NOW and you will not regret it!!

Our son is just under 2 months old and is showing signs of rolling, so we stopped swaddling. What a nightmare. With the swaddle, he’d consistently sleep about 8:30pm-1am, wake up to feed, then sleep again until about 4:30-5am, then would go back down until 6-6:30am. Not bad for a 1 month old.

Without the swaddle… oh boy. Little guy wakes up every 1-2 hours from startling himself awake. He was clearly getting frustrated because he couldn’t sleep. And we weren’t enjoying the lack of sleep either. And this was with the nested bean sleep sack.

So, with him being almost 2 months and 13 pounds, we bought the Merlin suit and WOW. The instant we put him in it, you could see him relax. It muffles the startle reflex as promised, and is so cozy and comfy - like wearing a comforter. He fell asleep very quickly and slept SO soundly. I wager it won’t be long until he is sleeping 5-6+ hours at a time!

We also haven’t really been able to ever put him down for naps, even when swaddled. We’ll, lo and behold, I am writing this review while he is sound asleep for a nap!! I’ve already ordered another suit because if anything happens to the current one (aka midnight blowout), we would be in dire straights.

While it muffles the startle reflex, he can still move his arms and legs plenty and can do his bicycle legs if he gets gas. It’s just that none of these movements disturb his sleep. He was also able to fall back asleep independently after waking which he has never done!

I’ve included screenshots of his nanit nighttime report - one from before the Merlin suit (was in the nested bean sleep sack), and the other from his first night in the sleep sack. See the difference for yourself.

I will forever worship at the ground of the creator of this suit. THANK YOU THANK YOU!
Customer image
Jonathan
5.0 out of 5 stars BUY THIS NOW
Reviewed in the United States on March 13, 2024
Did you have to stop swaddling your little one because they’re showing signs of rolling? Did you try using a standard sleep sack instead just to have them constantly startle themself awake? Buy this RIGHT NOW and you will not regret it!!

Our son is just under 2 months old and is showing signs of rolling, so we stopped swaddling. What a nightmare. With the swaddle, he’d consistently sleep about 8:30pm-1am, wake up to feed, then sleep again until about 4:30-5am, then would go back down until 6-6:30am. Not bad for a 1 month old.

Without the swaddle… oh boy. Little guy wakes up every 1-2 hours from startling himself awake. He was clearly getting frustrated because he couldn’t sleep. And we weren’t enjoying the lack of sleep either. And this was with the nested bean sleep sack.

So, with him being almost 2 months and 13 pounds, we bought the Merlin suit and WOW. The instant we put him in it, you could see him relax. It muffles the startle reflex as promised, and is so cozy and comfy - like wearing a comforter. He fell asleep very quickly and slept SO soundly. I wager it won’t be long until he is sleeping 5-6+ hours at a time!

We also haven’t really been able to ever put him down for naps, even when swaddled. We’ll, lo and behold, I am writing this review while he is sound asleep for a nap!! I’ve already ordered another suit because if anything happens to the current one (aka midnight blowout), we would be in dire straights.

While it muffles the startle reflex, he can still move his arms and legs plenty and can do his bicycle legs if he gets gas. It’s just that none of these movements disturb his sleep. He was also able to fall back asleep independently after waking which he has never done!

I’ve included screenshots of his nanit nighttime report - one from before the Merlin suit (was in the nested bean sleep sack), and the other from his first night in the sleep sack. See the difference for yourself.

I will forever worship at the ground of the creator of this suit. THANK YOU THANK YOU!
Images in this review
Customer image Customer image Customer image

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