Ensure that your baby meets both the recommended age range and weight.

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Free shipping on all US orders $75+
Baby Merlin's Magic Sleepsuit Size Chart
Ensure that your baby meets both the recommended age range and weight.

Baby Merlin's Magic Sleepsuit Size Chart
Ensure that your baby meets both the recommended age range and weight.

Designed for smoother transitions and sweeter dreams, the HALO® Baby Merlin’s Magic Sleepsuit® helps babies move out of swaddling with comfort and security. Made for little ones who still crave a cozy, contained feeling, it’s a trusted solution for building better sleep habits—especially through tricky sleep regressions.
The Sleepsuit is designed to help calm the startle reflex, helping them settle easier and sleep longer. Featuring double zippers for quick changes and three soft layers, the Magic Sleepsuit® makes every stage of sleep a little easier for both babies and parents.
With over 20,000 glowing reviews, it’s a must-have for your next sleep milestone.
FEATURES:
• The original Baby Merlin’s Magic Sleepsuit — now part of the HALO family
• Helps ease the move from swaddling to wearable blankets
• Designed to provide extra comfort during sleep regressions when they need it most
• Designed to calm the startle reflex to help them sleep longer and more peacefully
• Double zippers for faster, easier diaper changes
• Open hands and feet for comfort and self-soothing
SAFETY:
• Should be used in a bare crib for back sleeping only at the recommended temperature for babies
• For babies 3 – 6 months only;discontinue use when your baby ages out, starts to rollover, or reaches the maximum weight recommendation
• Proper fit is critical to success with Magic Sleepsuit. Please contact our customer care team for info on sizing. (We are able to review photos and confirm if your baby is wearing the correct size!)
• Imported
FABRIC
• Cotton - Shell and lining: 100% cotton.
• Fill: 100% polyester (exclusive of decoration)
CARE
Wash before first use. Machine wash cold with like colors on a gentle cycle. Use only non-chlorine bleach when needed. Tumble dry low. Do not iron. Do not dry clean.
Do not dry clean. For best results, close the zipper and fasteners and turn inside out before washing.
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Designed for smoother transitions and sweeter dreams, the HALO® Baby Merlin’s Magic Sleepsuit® helps babies move out of swaddling with comfort and security....
Designed for smoother transitions and sweeter dreams, the HALO® Baby Merlin’s Magic Sleepsuit® helps babies move out of swaddling with comfort and security. Made for little ones who still crave a cozy, contained feeling, it’s a trusted solution for building better sleep habits—especially through tricky sleep regressions. The Sleepsuit is designed to help calm the startle reflex, helping them settle easier and sleep longer. Featuring double zippers for quick changes and three soft layers, the Magic Sleepsuit® makes every stage of sleep a little easier for both babies and parents. With over 20,000 glowing reviews, it’s a must-have for your next sleep milestone.
Yes—when used as directed.
Always place baby on their back to sleep in a crib or bassinet with no loose
bedding. The Magic Sleepsuit is designed for back sleeping only.
The Magic Sleepsuit is not weighted and does not contain any weighted material.
Our sizing chart is based on industry standards and these size ranges are guidelines as all babies have different body types which can affect fit. If you have any questions about the sizing of the Magic Sleepsuit, please feel free to send us an email of your baby in the Magic Sleepsuit to customerservice@halosleep.com and will be happy to do a Visual Sizing Assessment.
Size Guide
HALO Magic Sleepsuit is recommended for babies 3 – 6 months only. There are two sizes available to accommodate babies at different weights.
Size Small: 12-18 lbs
Size Large: 18-21 lbs
When your little one is breaking out of the swaddle but still needs the cozy, contained feeling to sleep comfortably on their back, try transitioning them to the Magic Sleepsuit.
We recommend discontinuing use of the Magic Sleepsuit once your child begins to roll while wearing the Sleepsuit or show signs that they want to roll over while wearing it.
This is typically a sign that babies are ready for the next stage of having more freedom of movement in their sleep.
The Magic Sleepsuit is designed for back sleeping in the crib. It is not to be used for tummy sleeping.
However, if your little one is rolling over only during tummy time, they are still able to use the Magic Sleepsuit. It is only when they are rolling over while wearing the Magic Sleepsuit that it is time to transition them out.
When it's time, consider transitioning to the HALO SleepSack Wearable Blanket. It allows for greater freedom of movement, while still providing the comfort they are looking for.
The Magic Sleepsuit should be used in a room at the AAP recommended temperature for babies, which is on the cooler side.
We recommend a diaper or onesie under the Magic Sleepsuit. We do not recommend any more than one layer of light cotton.
Like with any baby sleep product, it is up to parents to monitor the baby in the Sleepsuit and make sure the baby's room is at the recommended temperature for babies. Please remember that babies' hands and feet can feel cool, so the best way to gauge body temperature is to place your hand on their stomach or back. If they feel hot and sweaty, remove a layer of clothing or remove them from the Sleepsuit.
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