lulumoon Sleep Sack Muslin for Baby: Cotton Wearable Blanket for 3-9 Months - Soft Lightweight Ideal for Nursery Lounge Nighttime Naptime
Condition: New
Buy Now, Pay Later
As low as
$7
/ mo
Learn more
- – 4-month term
- – No impact on credit
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
Extended holiday returns
Returnable until Jan 31, 2026 Learn more
Returnable until Jan 31, 2026 Learn more
This item's return window has been extended for the holiday season: Returnable until Jan 31, 2026
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
Only 5 left in stock, order soon!
Arrives
Tuesday, Dec 16
Size: Small
Color: Sanddaisy&greystar
Number of Items: 2
Features
- 100% cotton muslin
- Imported
- Cozy Double Layer - All-Season Comfort: Embrace the year-round comfort for your little one with a double-layer Muslin sleep sack. The elegant solid exterior and the delightful twig pattern interior not only create a stylish sanctuary in your nursery but also provide a breathable and tender cocoon for your baby's peaceful rest.
- Effortless Diaper Changes - Undisturbed Ease: Relax knowing your baby is snug in a sleep sack that combines the convenience of a two-way YKK zipper for easy diaper changes with the ease of shoulder snaps for quick and hassle-free dressing. This smart design ensures that you can attend to your baby's needs without disrupting their peaceful rest, making it an essential addition to your nursery.
- Spacious Bottom for Playful Movement: Designed for infants aged 3 to 9 months, this size S sleep sack offers an extra-wide bottom, providing ample space for your baby to play and explore. The spacious design, combined with the soft, lightweight Muslin fabric, encourages active discovery while supporting peaceful rest in your nursery.
- Temperature Control for Year-Round Use: With a 0.7 TOG rating, this Muslin sleep sack is meticulously designed for optimal temperature regulation, keeping your baby cozy in the cold and cool in the warmth. The natural Muslin fabric breathes with your baby, delivering consistent coziness year-round.
- Machine Washable - Softness Guaranteed: Experience the convenience of a machine-washable Muslin sleep sack that retains its softness wash after wash. The neutral hues and subtle design of this sleep sack seamlessly blend with any nursery's aesthetic, making it an ideal choice for new parents or a cherished baby shower present.
Package Dimensions: 7.4 x 5.71 x 4.33 inches
Item model number: Muslin Sleeveless
Target gender: Unisex
Material Type: Cotton
Care instructions: Machine Wash
Number Of Items: 2
Style: Muslin
Batteries required: No
Item Weight: 15.5 ounces
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Dec 16
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Size: Small
Color: Sanddaisy
Number of Items: 1
We’ve tried several sleep sacks over the past few months, but the Lulumoon muslin sleep sack has really stood out. Both in comfort and quality. If you're looking for a lightweight, breathable option for warmer nights or layering in cooler weather, this is a great choice. 💤 Soft & Gentle Material The muslin cotton is buttery soft and gets even softer with each wash. It's lightweight yet substantial, and doesn’t feel flimsy like some cheaper alternatives. My baby has sensitive skin and has had zero issues with this fabric. no redness or irritation, even after a full night of wear. 🌙 Perfect for Temperature Regulation This sleep sack is ideal for moderate climates. We’ve used it during late summer nights and early fall with just a cotton sleeper underneath. It helps regulate body temperature without overheating — exactly what we were looking for. 🔒 Thoughtful Design I love that the zipper opens from the bottom — making those 2 a.m. diaper changes so much easier without fully undressing my baby. The zipper is smooth, doesn’t snag, and has a soft cover at the top to prevent scratching under the chin. It’s clear that Lulumoon paid attention to the small details. 🧺 Durability We’ve washed ours at least 10 times now and it’s holding up beautifully. No pilling, no loose threads, and the color is just as vibrant as day one. 🧡 Peace of Mind Most importantly, I feel safe putting my baby in this. No loose blankets, no overheating, and plenty of room for little legs to kick and move. It’s also roomy enough to grow with baby. we sized up slightly and there’s lots of wiggle room without being oversized. 📌 Final Thoughts: Highly recommend the Lulumoon muslin sleep sack for any parent looking for a breathable, safe, and well-made wearable blanket. It’s become part of our nightly routine and I’ll definitely be purchasing another as a backup. A small investment for better sleep.
...
show more
Reviewed in the United States on October 13, 2025 by Megan
Size: Medium
Color: Sanddaisy
Number of Items: 1
Let me just say, this Lulumoon Sleep Sack Muslin for Baby has been a total game-changer for bedtime in our house! It’s the perfect mix of comfort, functionality, and style, and my baby (and I) absolutely love it. What Makes It So great stunning design, This sleep sack is absolutely gorgeous! The color is soft and elegant, and the inside lining has the prettiest little print that makes it feel extra special. It’s one of those products that looks like it belongs in a high-end boutique. Super Soft and Lightweight: The muslin cotton is incredibly soft to the touch it feels like it was made with a baby’s delicate skin in mind. It’s lightweight yet cozy, perfect for keeping my baby comfy in warmer months or layering in cooler weather. It’s breathable and just feels so luxurious! Incredibly Functional: The zipper is a lifesaver! It zips from the bottom, which makes nighttime diaper changes ridiculously easy no fuss, no stress. Plus, it’s roomy enough for my baby to wiggle and stretch while still staying safe and snug. The Lulumoon Sleep Sack Muslin for Baby isn’t just a sleep sack it’s a little piece of baby luxury. It’s soft, functional, and absolutely beautiful, making bedtime feel like a dream for both baby and mom. If you’re looking for something that checks all the boxes and adds a touch of elegance to your baby’s routine, this is the one to get. I can’t recommend it enoug
...
show more
Reviewed in the United States on January 26, 2025 by Gabby Gabby
Size: Medium
Color: Olivetwig
Number of Items: 1
Very nice sleep sack. My son gets hot easily and I think this is the perfect material to not let him get over heated. I like the snaps on the shoulder straps the best. Super easy to get on and off. Runs pretty big.
Reviewed in the United States on October 25, 2025 by Emma Angus
Size: Large
Color: Olivetwig
Number of Items: 1
Love this! Excellent quality and keeps my toddler warm and cozy at night. Very soft material and you can tell it was made well. I ordered for her when she was about 20 months old and she’s still wearing it at 29 months, with plenty of room to grow.
Reviewed in the United States on November 3, 2025 by AvaDear
Size: Large
Color: Olivetwig
Number of Items: 1
My little loves his sleep sack as it’s part of his bedtime routine. This one is easy to put on because of the shoulder snaps HOWEVER he has figured out how to take it off and some mornings has removed it entirely. Not a bad thing, but will probably find one without snaps. It’s breathable and was great for the warmer summer months and has fit him well
...
show more
Reviewed in the United States on October 11, 2025 by BLT
Size: Large
Color: Greentwig
Number of Items: 1
Seems a bit short for the size. My babies are long so I always size up, sometimes 2 sizes, but even sizing up this is very short and I won't be able to use it as long as other brands. I like the quality and softness. Easy to care for and nice cotton fabric and the breathability for summer. Its not to heavy and nice weight. Great for sleeping in spring summer or fall.
...
show more
Reviewed in the United States on May 21, 2025 by Kelli M. Kelli M.
Size: Medium
Color: Sanddaisy&greystar
Number of Items: 2
Love the material. It is nice cotton and it can breathe through. It is safe for baby to wear and keep my baby warm!
Reviewed in the United States on October 17, 2025 by Eric
Size: Medium
Color: Olivetwig
Number of Items: 1
Nice sleepsack. Definitely more on the warmer side. Easy to put on and take off. Washes well and stays soft. Highly recommend for great organic cotton option.
Reviewed in the United States on September 5, 2025 by Betty