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Swaddelini Lavender Swaddle Sleep Sack 3D knit lightweight
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The Swaddelini Lavender Swaddle Sleep Sack is the world’s first 3D knit, seamless baby swaddle with patented Hug Technology. It provides gentle compression, breathable stretch, and a bottom flap for easy diaper changes. Lightweight TOG 0.2, 0.3 and machine washable. Made in the USA and converts to a wearable blanket as baby starts rolling.
Key Features
- World’s first 3D knit seamless baby swaddle
- Patented Hug Technology mimics a parent’s gentle embrace
- Snug around the chest and loose around the hips per AAP alignment
- Breathable from every angle for airflow
- Converts to a wearable blanket when baby starts rolling
- Bottom flap design for easy nighttime diaper changes
- Made in the USA with high performance yarns
- Lightweight TOG 0.2, 0.3 for all season use
Details
- Brand: Swaddelini
- Product type: Swaddle Sleep Sack
- Color: Lavender
- Material: 3D stretch knit nylon
- TOG Rating: 0.2, 0.3 (lightweight, all-season)
- Age Range: Newborn, Rolling
- Machine Washable: Yes
- Origin: Made in the USA
- Design details: Seamless 3D knit, bottom flap for diaper access
- Technology: Patented Hug Technology®
- Safety alignment: Created in alignment with American Academy of Pediatrics safe sleep guidelines
- Comfort claims: Provides gentle compression and breathable stretch; breathable from every angle
- Durability and feel: Knit with soft, high performance yarns for durability, stretch, and skin safe comfort
- Self soothing: Mimics a parent’s gentle embrace to calm startle reflexes (Moro reflex)
How to Use and Care
- Machine washable Yes
Who It Is For
Ideal for newborns through the rolling stage. A thoughtful gift for new parents and a practical baby registry item.
Frequently Asked Questions
What material is the Swaddelini Lavender Swaddle Sleep Sack made from?
It is made from 3D stretch knit nylon.
Is this swaddle machine washable?
Yes. The product is machine washable.
Can the swaddle be used once my baby starts rolling?
Yes. It converts easily into a wearable blanket by leaving the arms out when the baby starts rolling.
How does the Swaddelini promote safe sleep?
It is created in alignment with American Academy of Pediatrics safe sleep guidelines, snug around the chest and loose around the hips, and breathable from every angle.
Where is the Swaddelini Sleep Sack made?
The Sleep Sack is made in the USA.
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.


Our patented Hug Technology gently mimics a parent's embrace to calm the Moro startle reflex. That steady, secure feeling helps babies settle faster and stay asleep longer.

The 3D stretch knit breathes from every angle with a lightweight 0.2 to 0.3 TOG rating. Your baby stays cozy without overheating, night after night.

When your baby starts rolling, the sack converts into a wearable blanket by leaving the arms out. One piece supports safe sleep from newborn through toddler.
A good swaddle keeps your baby secure and safe while fitting the season and their stage.
- Check the fit: Look for snug support around the chest and room to move at the hips. This protects healthy hip development while still calming the startle reflex.
- Match the TOG to your room: A lightweight TOG around 0.2 to 0.3 suits most rooms year round. Pair it with the right layers underneath rather than a heavier swaddle.
- Plan for the rolling stage: Choose a design that converts to arms-out use, so you can keep using it safely once your baby starts to roll.
- Prioritize breathability: Breathable knit fabrics help prevent overheating, which matters most for overnight sleep.
- Think about diaper access: A bottom opening makes late-night changes far easier and keeps your baby more settled.
When should I stop using the swaddle with arms in?
Once your baby shows signs of rolling, switch to arms out. This sack converts to a wearable blanket so you can keep using it safely through that transition.
Is it warm enough for winter or too warm for summer?
It is a lightweight, all-season design at 0.2 to 0.3 TOG. Adjust the clothing layers underneath to keep your baby comfortable in any room temperature.
How do I change a diaper without waking my baby?
The bottom flap opens for diaper access, so you can change your baby overnight without fully unwrapping them.
Can I machine wash it?
Yes, it is machine washable. The seamless 3D knit holds its stretch and shape through regular washing.
What size or age is this made for?
It is designed for newborns through the rolling stage, adapting to your baby's natural movement as they grow.
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. Our human support team is happy to help if you have questions.
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"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…"
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"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…"
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"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…"
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"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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"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."
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"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…"
