Ensure that your baby meets both the recommended age range and weight.
Perfectly snuggly for my six
"Perfectly snuggly for my six month old. She loves to sleep in this onesie and it definitely helps her sleep longer!"
FAQs
Overall rating: 4.7769785 / 5 from 139 reviews.
AI Generated Review Summary
The HALO® Baby Merlin's Magic Sleepsuit® Micro-Fleece is designed to help babies transition smoothly from swaddling with comfort and security. It is praised for its ability to calm the startle reflex, helping babies settle and sleep longer. While some customers find it perfect, others have mixed opinions on the size.
Summary topics
- Temperature Retention: 5%
- Swaddle Transition: 7%
- Size Fit: 10%
- Sleep Quality: 38%
Review topics: ["size","quality","material","sleep","fabric","legs","daughter","suit","baby","transition","son","swaddle","magic","guy","fleece","naps","help","stays","fits","girl","man","merlin","hands","friends","lifesaver","babies","improvement","granddaughter","solution","works"].
Review highlights
- "Our son stays nice and warm since his room is on the cooler side." —
- "Magic Merlin suit is the only sleep aid that comforted our baby immediately." —
- "Baby has been sleeping well." —
Reviews
No magic here
"Hasn’t improved my baby’s sleep at all."
My baby hates this .
"My baby hates this ."
good quality. haven't had a
"good quality. haven't had a chance to use it."
definitely worth the hype!
"definitely worth the hype!"
Not magic but useful
"Seeing all the immediate success stories made me feel like maybe this didn’t have the magic we needed after two nights of no sleep improvement with it but by the third night our babe was sleeping more. Not sure if the suit did it but it is useful at least (and very cute) as a transition product from swaddle to arms out. Babe does seem to calm as soon as he’s in it too."
Great quality, tighter than expected
"We were given a hand me down Merlin Magic Sleepsuit (blue fleece), and it seemed to work well for my daughter so I decided to buy a 2nd one. She is 5 months and 15 lbs, so I got the 3-6 months size, which was the size of the blue one we’d been given. When the new one arrived it was clear the design had changed. The arms and legs were noticeably tighter than the old one. It is very soft and nice quality but I was disappointed because it is tight enough that if she wears a long sleeved onesie under it the sleeves get crumpled up and it is much harder to get her in and out of it. So we won’t get as much use out of this as I’d like. Bottom line is it’s a nicely made product but I’d recommend sizing up."
Cozy and warm
"It’s cozy and warm but on the smaller size for my 5 month old boy. He’s almost 20lb and the large fits very snug. Don’t think it’s going to last more than a month. Would be great if they offered the Merlin suit in an XL for bigger babies"
Amazing!
"My 4 month old granddaughter had FOMO. She was very alert, social and way overtired. She would only nap in a steadily moving stroller or car. We put the sleep suit on her and she is instantly relaxed. Now she will fall asleep in our arms in less than 10 minutes. It’s been almost 3 weeks and this sleep suit is still working its magic at nap time and bedtime."
Sleep suit does wonders
"We are transitioning our 5 month old from a swaddle to her crib. This product is greatly helping the transition. I would highly recommend to anyone who is going through the transition."
Q&A
- What is the difference between the micro fleece and the cotton sleep suit?
- Our Merlin Sleepsuit is offered in both micro fleece and cotton. It’s really up to the parent and/or baby’s preference which they prefer. Cotton is always a great, all-season option. Fleece offers a little extra coziness if preferred. Remember to dress your baby in a short sleeve onesie ONLY when wearing the Sleepsuit, no matter which fabric you choose.
Blog posts
What Is a Bedside Sleeper — and Is It Right for You?
Bringing a new baby home is a whirlwind of excitement, joy, and chaos. Figuring out the best sleep setup for your growing family...
How to Keep Your Baby Safer in a Crib at Night
Bringing Your Baby Home: Why Safe Sleep in the Crib Matters Bringing a new baby home is full of emotion. There’s excitement, a li...
What Is the Best Bassinet for a Baby in 2026
Picking out the right bassinet for your new baby can feel like a big deal — because it is. You want something safe, comfortable,...
How Long Do Newborns Sleep?
Figuring out how long newborns sleep can feel like a puzzle. One minute they’re snoozing soundly, the next they’re wide awake and...