- Free over $100
- 30-day returns
- Secure checkout
- Human support
Moogco Purchase Protection
Ask about this product
Real answers about fit, safety, shipping & more — powered by Mia.
Mia is an AI assistant. For order-specific help she'll connect you to our team.
- Free U.S. shipping over $100
- 30-day easy returns, not the right fit? Send it back.
- Secure checkout, encrypted payment, buyer protected
- Real human support, U.S. based, replies fast
- Moogco Purchase Protection, free with your order. Damaged, not as described, or lost on the way? We refund it. How it works
Owned by a small family MoogCo Baby is a family-owned shop. Every order supports a real family who personally stands behind what we sell — thank you for shopping small. 💚
Growth and Freedom in Every Slumber
As your child begins to roll and explore, the Arms Out Swaddelini Sleep Sack is the perfect blend of freedom and comfort. Designed for babies weighing 18-25 pounds, this features our signature Hug Technology®, providing gentle compression therapy to soothe and calm your baby into a restful sleep. This arms-out sleeping sack is a seamless piece of baby care innovation, continuing our commitment to quality, safety, and thoughtful design, handcrafted in Holland, Michigan, USA.
The Arms Out Swaddelini Sleep Sack represents a seamless transition into the next exciting stage of your baby’s development, combining safety, innovation, and comfort. It's more than a sleep sack; it’s a reassurance of your continued care.
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.
The short sleeve, arms-out fit lets your baby use their hands for tummy time, reaching, and play while staying safely covered. It supports the new mobility stage without restricting natural movement.
Our signature Hug Technology provides gentle, even compression across the torso to calm startle responses and help babies settle. The textured knit keeps the comforting hold consistent night after night.
Sized for babies weighing 18 to 25 pounds, the short sleeve silhouette eases the transition from swaddle to independent sleep. Handcrafted in Holland, Michigan, USA, it is built with careful attention to fit and finish.
Match a sleep sack to your baby’s weight, sleep stage, and the room temperature for safe, comfortable nights.
- Check Weight Range: Use the product weight range, not age, to confirm a safe fit and correct sleep stage.
- Assess Sleep Stage: Choose arms-out when your baby can roll and needs freer arm movement while sleeping.
- Measure Fit: The sack should fit snugly at the chest while allowing hip and leg movement for healthy development.
- Dress for Temperature: Layer pajamas under the sack based on room temperature, using lighter or heavier sleepwear as needed.
- Time Your Transition: Move from a full swaddle to arms-out as mobility increases, typically when rolling begins or the weight range is reached.
What is Hug Technology and how does it work?
Hug Technology is the sleep sack's gentle compression approach, providing even pressure across the torso to soothe startle reflexes and help babies settle to sleep.
What size and age is this sleep sack for?
This short sleeve Arms Out sleep sack is designed for babies weighing 18 to 25 pounds, a common range as infants begin rolling and exploring.
How should I wash and care for the sleep sack?
Treat it like other knit baby sleepwear: machine wash on a gentle cycle with mild detergent, then tumble dry low or air dry to preserve fit.
When should I stop using an arms-out sleep sack?
Stop or switch when your baby consistently pulls up, climbs out of their sleep space, or exceeds the product weight range, whichever comes first.
What are the shipping and return options?
We ship from a US warehouse. Orders over $100 qualify for free US shipping. We offer 30-day returns, and human customer support is available if you need help.
MoogCoSilverCups
MOOGCO Silver Nursing Cups 925k Silver - Protect Against Sore Breasts And Nipple Irritation
MoogCoSilverCups
The Original Silver Nursing Cups with Silicone Pads
Swaddelini
Grey Swaddle Sleep Sack
Swaddelini
Lavender Swaddle Sleep Sack
Swaddelini
Pink Swaddle Sleep Sack
MoogCoSilverCups
MOOGCO Silver Nursing Cups 999k Silver - BPA-Free for Babies & Toddlers
Swaddelini
Bamboo Blend Beige Swaddle Sleep Sack
Swaddelini
Blue Swaddle Sleep Sack
Dingle Dangle Baby
Dingle Dangle Diaper Changing Distractor
Sunflower Motherhood
Morning Sickness Box
Seven Lantern Lane
First Birthday Golf Bubble for Girls – Reversible Pink Gingham Skirted Bubble Outfit
Costway
Kids Outdoor Sandbox with Oxford Cover and 4 Corner Seats
Little Martin's Drawer
Little Martin's Portable Fetal Doppler - Hear Your Baby's Heartbeat Anytime - Rechargeable Batteries by USB - FDA Cleared
momjug
momjug breastfeeding water bottle
Swaddelini
Orange Swaddle Sleep Sack
MoogCoSilverCups
MOOGCO Silver Nursing Cups 925k Silver
Little Martin's Drawer
SpringBud FD-200B Fetal Doppler Hearbeat Monitor FDA Cleared
M4A
Shnuggle Toddler Bath Tub | Big Bath for bigger kids | Child bathtub seat support | Fits in shower and adult bath
Costway
All-Weather HIPS Kid's Adirondack Chair with with High Backrest and Armrests
Costway
Kids Picnic Table and Bench Set with Cushions and Height Adjustable Umbrella-Blue
Costway
Wooden Rocking Climbing Arch with Cushion 3-in-1 Montessori Kids Climber Rocker
dripfloats
Neutral Checkered Kids Float
BROOKLYN NEUTRAL
Green Gingham Splash Pad
Costway
Kids Sensory Swivel Chair Elephant 360° Spinning Chair with Non-Slip Metal Base
Ocodile.com
Solid Wood Kids Bunk Bed
Harp Angel Boutique
Organic Muslin Swaddle Blanket - Mocha Ditsy Floral Ruffle
Harp Angel Boutique
Baby Pink Organic Muslin Cotton 6-Layer Baby Blanket
Harp Angel Boutique
Organic Knit Romper - Mauve Pom
Harp Angel Boutique
Bow Turban Hat - Sage Ditsy Floral
Harp Angel Boutique
Knotted Baby Gown - La La Floral
Harp Angel Boutique
Ruffle Ribbed Short Set - Cream
Harp Angel Boutique
Organic Knit Sweater - Pink Pom
Harp Angel Boutique
Fleur Ribbed Baby Pajamas | Ruffle Zipper Romper
Harp Angel Boutique
Arona Blue Ribbed Baby Pajamas | Zipper Romper
Harp Angel Boutique
Fleur Ribbed Bow Turban Baby Hat
Harp Angel Boutique
Organic Knit Sweater - Cream Pom
Harp Angel Boutique
Knotted Headband - Fleur Ribbed
Harp Angel Boutique
Arona Blue Ribbed Baby Knot Hat
Harp Angel Boutique
Knotted Headband - Sage Ditsy Floral
Harp Angel Boutique
Two-Piece Short Set - Surf
Harp Angel Boutique
Two-Piece Short Set - Sage Ditsy Floral
Harp Angel Boutique
Fleur Ribbed Knotted Baby Gown
Harp Angel Boutique
Knotted Baby Gown - Arona Blue Ribbed
Harp Angel Boutique
Knotted Headband - Arona Blue Ribbed
Harp Angel Boutique
Copper Organic Cotton Muslin Baby Blanket
Harp Angel Boutique
Wildflower Bamboo Knotted Baby Gown
Harp Angel Boutique
Vintage Sunshine Bamboo Baby Stretch Swaddle Blanket
Harp Angel Boutique
Two-Piece Pajama Set - Wildflower
"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!"
"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!"
"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…"