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Swaddelini Pink Swaddle Sleep Sack 3D Knit Seamless
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Swaddelini Pink Swaddle Sleep Sack is a 3D knit seamless swaddle designed to cradle babies for safe, self-soothing sleep. It uses Hug Technology to help soothe Moro reflex and active sleep. The sleep sack transitions into a wearable blanket as a child grows; leave the arms out for safety. It is designed in compliance with AAP guidelines.
Key Features
- World's first 3D knit seamless swaddle
- Transitions into a wearable blanket as child grows
- Leave arms out when converted for safety and comfort
- Hug Technology gently cradles baby to self-soothe
- Helps soothe Moro reflex and active sleep
- Designed in compliance with AAP guidelines
- Secure fit around the chest with looseness around hips
- Thoughtful and practical gift for new parents
Details
- Brand: Swaddelini
- Product type: Swaddelini
- Color: Pink
- Construction: 3D knit seamless swaddle
- Transition: Easily transitions into a wearable blanket
- Usage note: Leave their arms out to ensure safety and comfort
- Technology: Hug Technology
- Soothing: Gently cradles your baby to self-soothe through Moro reflex and active sleep
- Safety compliance: Designed in compliance with AAP guidelines
- Fit guidance: Secure fit around the chest and appropriate looseness around the hips
- Gift note: Thoughtful and practical gift for new parents
Who It Is For
For babies and new parents. The Swaddle Sleep Sack is presented as a thoughtful and practical gift for new parents.
Frequently Asked Questions
What is the Swaddelini Swaddle Sleep Sack?
It is the world's first 3D knit seamless swaddle that provides comfort, safety, and freedom for baby sleep.
Does this swaddle convert to a blanket?
Yes. It easily transitions into a wearable blanket as your child grows or starts to roll over.
How should I position the arms when converted?
Leave their arms out to ensure safety and comfort when using it as a wearable blanket.
What is Hug Technology?
Hug Technology gently cradles your baby to self-soothe through Moro reflex and active sleep.
Is this designed to meet safety guidelines?
Yes. The Swaddle Sleep Sack is designed in compliance with AAP guidelines with a secure chest fit and looseness around the hips.
All orders are processed and shipped within a maximum of 2 to 5 business days. Please note that this is an estimated timeline and does not constitute a guarantee, as national holidays and other external factors may impact final delivery and shipping times.
🚚 Free Shipping and Discount Clarification
For qualifying orders of $100 or more, the maximum available discount applied to your order is $30.


Hug Technology gently cradles your baby the way your arms would, helping soothe the Moro reflex during active sleep. That gentle, contained feeling helps little ones settle and stay calm through the night.

As your child starts to roll, the swaddle easily transitions into a wearable blanket by leaving their arms out. It keeps working through those early months instead of being outgrown in weeks.

Parents come back to buy a second for themselves and more for gifts. The slip-on design means no complicated wrapping and no unraveling in the middle of the night.
A few simple factors help you pick the right fit and keep sleep both safe and comfortable.
- Get The Size Right: Choose based on your baby's weight. A smaller size suits newborns around 6 to 12 pounds, while a larger size fits babies over about 10 to 18 pounds.
- Look For A Secure Fit: You want it snug across the chest to soothe the startle reflex, but loose around the hips so legs can move freely for healthy hip development.
- Plan For The Roll: Once your baby shows signs of rolling, switch to arms-out. A design that transitions to a wearable blanket saves you from buying something new.
- Match The Room Temperature: Use a TOG guide to layer under the swaddle. Fewer layers in a warm room and an extra layer when it is cooler keeps baby comfortable.
- Choose Easy Nighttime Use: A slip-on style with a diaper flap makes late-night changes faster and avoids the frustration of rewrapping a sleepy baby.
What size should I order?
Order by weight. If you are still expecting, the small (6 to 12 pounds) is the right starting point. If your baby is already here and over 10 pounds, choose the large (12 to 18 pounds).
Can my baby use this once they start rolling?
Yes. When your baby begins to roll, transition to a wearable blanket by leaving their arms out. This keeps them safe while still giving that cozy, contained feeling.
How does it help my baby sleep better?
The Hug Technology gently cradles your baby to soothe the Moro startle reflex during active sleep. That calming pressure helps babies settle and self-soothe for longer stretches.
Is it safe for hip development?
It is designed in compliance with AAP guidelines, with a snug fit around the chest and appropriate looseness around the hips so your baby's legs can move naturally.
How do I dress my baby underneath it?
Use the room temperature as your guide. In warmer rooms, one layer or no layer underneath is enough, and in cooler rooms you can add a second layer for warmth.
How does shipping and returns work?
We ship from a US warehouse with free US shipping on orders over $100, and we offer 30-day returns. If you have questions, our human customer support team is happy to help.
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G 5.0 on Google · 9 reviews · Verified buyer reviews from our store
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"Ordered from here and they sent my items fast! Great quality!"
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"All of my dealings with them have been great!"
"Wonderful company to work with! Great product"
"great prices and fast shipping!"
"Wonderful products"
"I was lucky to find this pad for my grandson’s bassinet. I like how it is all natural snd organic. Just make sure to buy it a little bigger because it shrinks after washing. Also give ample time…"
"These helped at first but it seemed like the edges dug into my skin making it irritated (might have needed the larger ones). Once my milk came in more, milk would spill everywhere. I found that milk…"
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"Initially, I was skeptical of using it, but when my doc referred it to me for my cracked nipple, it worked like a charm. I did not want to put any balm or lotion over my nipple as I did not wanted…"
"Amazing tool for breastfeeding! These protect sensitive, chapped or cracked nipples like little shields. No more sticking to clothing/bras and wincing when anything bumps into my chest. I've been…"
"I cant belive they heal hours within you put them on. Totally a must while breastfeeding. Such a good quality"
"I used these for the first four weeks after baby came. It was during that phase where baby was so small he didn’t have a great latch and so I was getting sore nipples. This was great for protecting…"
"Only paci my breast feed three week old has accepted so far🙌🏼"
"Worked great and would definitely use again. The only thing is sizing can be tricky. I would’ve gotten a size bigger and I’d consider my size to be on the smaller side. If you’re not sure, just size…"
"I wore these for the first two months and they truly saved my breastfeeding journey - worked exactly how I expected. They gave instant relief. I basically wore them day and night for the first 6…"
"Love these , I bought due to damage from pumping . One week with creams and balms didn’t do much but two days with these and I’m almost healed !"
"LIFE. SAVER. Bought this the first week I started nursing my son and had the WORST cracked nipples. These solved the issues OVERNIGHT!"
"I was lucky to find this pad for my grandson’s bassinet. I like how it is all natural snd organic. Just make sure to buy it a little bigger because it shrinks after washing. Also give ample time…"
"These helped at first but it seemed like the edges dug into my skin making it irritated (might have needed the larger ones). Once my milk came in more, milk would spill everywhere. I found that milk…"
"Perfect. Great price and my little one very opposed to training has only had accidents in the last week. My daughter is 2yrs old, 27 lbs and the Medium is perfect. She has room in them but the arent…"
"Initially, I was skeptical of using it, but when my doc referred it to me for my cracked nipple, it worked like a charm. I did not want to put any balm or lotion over my nipple as I did not wanted…"
"Amazing tool for breastfeeding! These protect sensitive, chapped or cracked nipples like little shields. No more sticking to clothing/bras and wincing when anything bumps into my chest. I've been…"
"I cant belive they heal hours within you put them on. Totally a must while breastfeeding. Such a good quality"
"I used these for the first four weeks after baby came. It was during that phase where baby was so small he didn’t have a great latch and so I was getting sore nipples. This was great for protecting…"
"Only paci my breast feed three week old has accepted so far🙌🏼"
"Worked great and would definitely use again. The only thing is sizing can be tricky. I would’ve gotten a size bigger and I’d consider my size to be on the smaller side. If you’re not sure, just size…"
"I wore these for the first two months and they truly saved my breastfeeding journey - worked exactly how I expected. They gave instant relief. I basically wore them day and night for the first 6…"
"Love these , I bought due to damage from pumping . One week with creams and balms didn’t do much but two days with these and I’m almost healed !"
"LIFE. SAVER. Bought this the first week I started nursing my son and had the WORST cracked nipples. These solved the issues OVERNIGHT!"
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"I purchased a bat costume for my daughter with Moogco and we absolutely loved it! We used it for our daughters first Santa photos. They are a small business worth…"
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"great prices and fast shipping!"
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"Did the job, kept me more comfortable the first couple weeks postpartum as breastfeeding was established. Next time I would go for the design that has perforated holes for airflow."
"As a breastfeeding mom I truly couldn’t recommend these more. They literally SAVED MY LIFE in the newborn stage and then saved me again when teething started. They’re easy to use, easy to clean and…"
"This is a great item to have for breastfeeding mommas. It feels very cooling and refreshing after breastfeeding and makes wearing nursing bras very comfortable since the fabric is not rubbing on your…"
"These cups protect and help heal sore nipples so quickly. Comfortable under a bra, easy to clean, and worth the investment for breastfeeding. Stats: 5’3”, 140 lbs, 8 weeks postpartum & nursing"
"Great value for the price compared to name brand silverettes. I only really used them for maybe 2-3 weeks, so I’m glad I didn’t spend the extra money when these got the job done just as well"
"These are perfect for breastfeeding. They help keep any ointment or lanolin from getting on your clothes and smooth for immediate relief of cracks or nipple soreness in the first few weeks."
"Had a cracked nipple, added some organic ointment and put this over it, healed in 2 days! Recommend it 100%"
"These are great for nursing in the first few weeks when there’s soreness and breakdown. Would recommend!"
"These were wonderful for me postpartum while learning to breastfeed. Highly recommend. They are easy to clean & very functional."
"It saved my nipples multiple times. They’re super light. Quality is good, they do bend for no reason lol overall a good product."
"These were great in the beginning helped me so much."
"Any first time mama BUY THIS PRODUCT!!!! I cannot recommend and rave about this enough. They HELPED so so much! I wore them all the time when my nipples felt dry, cracked, and just hurt. Those first…"
"Did the job, kept me more comfortable the first couple weeks postpartum as breastfeeding was established. Next time I would go for the design that has perforated holes for airflow."
"As a breastfeeding mom I truly couldn’t recommend these more. They literally SAVED MY LIFE in the newborn stage and then saved me again when teething started. They’re easy to use, easy to clean and…"
"This is a great item to have for breastfeeding mommas. It feels very cooling and refreshing after breastfeeding and makes wearing nursing bras very comfortable since the fabric is not rubbing on your…"
"These cups protect and help heal sore nipples so quickly. Comfortable under a bra, easy to clean, and worth the investment for breastfeeding. Stats: 5’3”, 140 lbs, 8 weeks postpartum & nursing"
"Great value for the price compared to name brand silverettes. I only really used them for maybe 2-3 weeks, so I’m glad I didn’t spend the extra money when these got the job done just as well"
"These are perfect for breastfeeding. They help keep any ointment or lanolin from getting on your clothes and smooth for immediate relief of cracks or nipple soreness in the first few weeks."
"Had a cracked nipple, added some organic ointment and put this over it, healed in 2 days! Recommend it 100%"
"These are great for nursing in the first few weeks when there’s soreness and breakdown. Would recommend!"
"These were wonderful for me postpartum while learning to breastfeed. Highly recommend. They are easy to clean & very functional."
"It saved my nipples multiple times. They’re super light. Quality is good, they do bend for no reason lol overall a good product."
"These were great in the beginning helped me so much."
"Any first time mama BUY THIS PRODUCT!!!! I cannot recommend and rave about this enough. They HELPED so so much! I wore them all the time when my nipples felt dry, cracked, and just hurt. Those first…"
