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Woolino 4 Season Baby Sleep Sack - Ultimate Merino Wool Baby Sleeping Bag - Two-Way Zipper Adjustable Universal Size Sleep Sack for Baby (2-24 Months) - Birch Gray
Sustainability features
This product has sustainability features recognized by trusted certifications.
Made with chemicals safer for human health and the environment.
STANDARD 100 by OEKO-TEX requires every component of a textiles product—including all thread, buttons, and trims—to be tested against a list of more than 1,000 harmful regulated and unregulated chemicals which may be harmful to human health. The assessment process is globally standardized, independently conducted, and updated at least once a year based on new scientific information or regulatory requirements. Certification focus: #ProductSafety and #ChemicalsUsed.
Certification Number
23.HUS.59156Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
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Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Purchase options and add-ons
- 100% Merino Wool Lining / 100% Organic Cotton Outer
- Imported
- #1 RATED and #1 SELLING merino wool baby sleep sacks in US and Canada since 2010. Creative Child's 2018 Top Choice of the Year Award & winner of 2021 Cribsie Award and Mom's Choice Award
- REDUCE OR ELIMINATE SLEEPLESS NIGHTS - When baby sleeps better, so do parents. PREMIUM FABRICS for best comfort: Australian merino wool lining - 100% natural, luxuriously soft, and temperature regulating. GOTS certified organic cotton outer
- THE ONE AND ONLY sleep sack your baby will need until they turn two. UNIVERSAL SIZE: 2 months – 2 years. 4 SEASON USE: Merino wool regulates body temperature so it can be used year-round.
- MAXIMUM VERSATILITY - double shoulder snaps and two-way zipper system for easy dressing and diaper changes; Closable seat-belt slots for easy transfer between stroller, bouncer, crib, etc. Under-arm snaps allow this wearable blanket to grow with your baby and make it the perfect swaddle transition product
- PREMIUM QUALITY - Buy with confidence from Woolino, a trusted US company, offering US customer service and industry leading warranty for your peace of mind. The industry leader in merino wool baby essentials since 2010.
Additional Details
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This Item Woolino 4 Season Baby Sleep Sack - Ultimate Merino Wool Baby Sleeping Bag - Two-Way Zipper Adjustable Universal Size Sleep Sack for Baby (2-24 Months) - Birch Gray | Recommendations | dummy | dummy | dummy | dummy | |
Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | |
Price | $109.00$109.00 | $49.00$49.00 | $26.99$26.99 | $129.00$129.00 | $49.00$49.00 | $93.00$93.00 |
Delivery | Get it as soon as Monday, Mar 25 | Get it as soon as Tuesday, Mar 26 | Get it as soon as Monday, Mar 25 | Get it as soon as Monday, Mar 25 | Get it as soon as Monday, Mar 25 | Get it as soon as Monday, Mar 25 |
Customer Ratings | ||||||
Comfort | 4.9 | 5.0 | 4.7 | 4.6 | 5.0 | 4.5 |
Softness | 4.8 | 4.7 | 4.8 | 4.8 | 4.7 | 4.8 |
Sleep quality | 4.6 | 5.0 | 4.6 | 4.8 | 5.0 | 4.6 |
Light weight | 4.5 | 4.6 | 4.1 | 4.4 | 4.6 | 4.7 |
Value for money | 4.4 | — | 4.5 | 4.7 | — | — |
Sold By | Woolino | Woolino | mosebears | Woolino | Woolino | Woolino |
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Sustainability features
This product has sustainability features recognized by trusted certifications.
Made with chemicals safer for human health and the environment.
STANDARD 100 by OEKO-TEX requires every component of a textiles product—including all thread, buttons, and trims—to be tested against a list of more than 1,000 harmful regulated and unregulated chemicals which may be harmful to human health. The assessment process is globally standardized, independently conducted, and updated at least once a year based on new scientific information or regulatory requirements. Certification focus: #ProductSafety and #ChemicalsUsed.
Certification Number
23.HUS.59156From the brand
Product information
Product Dimensions | 11.81 x 9.45 x 1.97 inches |
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Item Weight | 1.32 pounds |
Department | unisex-baby |
Manufacturer | Woolino |
ASIN | B018HV3EOC |
Item model number | BabyBeige |
Customer Reviews |
4.8 out of 5 stars |
Best Sellers Rank | #33,328 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #515 in Baby Boy's Clothing #627 in Baby Girls' Clothing |
Is Discontinued By Manufacturer | No |
Fabric Type | 100% Merino Wool Lining / 100% Organic Cotton Outer |
Refill | wool, cotton |
Fabric cleaning | Dark |
Care instructions | Machine Wash |
Dishwasher compatible | No |
Assembly required | No |
Batteries required | No |
Import | Imported |
Warranty & Support
Feedback
Product Description
Home of the 4 Season Ultimate Baby Sleep Bag
Made with super fine merino wool, the 4 Season Ultimate Sleep Bag will help keep your baby at a perfect temperature all year round. That means there’s no need to worry about which weight sleep sack to use, or whether your baby will be too hot or cold while sleeping – they’ll always be just right!
The Benefits of Wearing Merino Wool
100% Natural, wicking moisture away and regulating body temp., machine-washable, and an excellent value as it comes in a universal size that fits babies from 2 months to 2 years - the Woolino 4 Season Ultimate Sleep Bag is the only wearable blanket your child will need, right up until they turn two.
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Premium materials
100% Natural silky-soft Australian merino wool lining and organic cotton outer.
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4 Season use
Merino’s unmatched ability to regulate body temperature provides perfect comfort in all seasons.
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Grows with your baby
One universal size, 2mo-2yrs. For smaller babies simply close the underarm snaps to adjust the fit.
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Excellent value
You don’t have to buy a different size and weight sleep bag every few months.
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Easy care
Machine wash and tumble dry on no-heat setting – no hand washing fuss.
Why choose the Woolino 4 Season Ultimate Sleep Bag?
Perfect comfort for better sleep. Naturally.
The Magic of Merino
Because of Merino wool's unique ability to regulate body temperature, it helps keep your baby warm when it's cold and cool when it's hot. That temperature regulation means that your child will sleep comfortably throughout the night, year-round – and that means a better night’s sleep for you too.
Better and Longer Sleep
A study done by the University of Sydney has found that a better night's sleep is achieved when sleeping in wool. Merino wool is the perfect fiber to have next to your child's sensitive skin. It regulates temperature, manages moisture, is easy to care for, soft, and durable. It is naturally perfect.
Woolino 4 Season sleep sacks made with merino wool
Ultimate Baby Sleep Sacks | Ultimate Toddler Sacks | Basic Sleep Sacks | Sleep Sacks with Legs | Big Kid Sleep Bags | |
Customer Reviews
|
4.8 out of 5 stars
3,007
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4.8 out of 5 stars
799
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4.7 out of 5 stars
1,038
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4.8 out of 5 stars
705
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4.9 out of 5 stars
15
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Fabric
| Merino Wool & Organic Cotton | Merino Wool & Organic Cotton | Merino Wool & Organic Cotton | Merino Wool & Organic Cotton | Merino Wool & Organic Cotton |
Size
| 2 - 24 Months | 2 - 4 Years | 0-6 m, 6-18 m, 18-36 m | 0-6 m, 6-18 m, 18-36 m, 3-4T | 4 - 6 Years |
Underarm Snaps to Adjust Fit
| ✔ | ✔ | ✘ | ✘ | ✘ |
Shoulder Snaps
| ✔ | ✔ | ✘ | ✘ | ✔ |
Safety-Belt Slots for Travel
| ✔ | ✔ | ✘ | ✘ | ✘ |
2-Way Zipper
| ✔ | ✔ | ✔ | ✘ | ✔ |
Replaces Loose Blankets in Bed
| ✔ | ✔ | ✔ | ✔ | ✔ |
4-Season Use
| ✔ | ✔ | ✔ | ✔ | ✔ |
Videos
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Is it worth it ? Honest Review
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Honest review of Woolino sleep sack
✅ Reviews with Lizzie
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Woolino Sleep Sack! Honest Review from a Mom!
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Best and ONLY SLEEP Sack Bag your Baby will NEED!
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the quality, warmth, comfort, and sleep quality of the sleep sack. For example, they mention it's well thought out, keeps baby warm, and provides a somewhat heavyweight cozy feel. That said, opinions are mixed on the value.
AI-generated from the text of customer reviews
Customers are satisfied with the quality of the sleep sack. They mention that it's well-thought-out, has amazing qualities, and is beautifully made. Customers also appreciate the sturdy seams, zipper, and merino wool inside. Overall, they say it'll make a great addition to any wardrobe.
"...It's well thought out and while I haven't used the seatbelt pockets I intend to go in a road trip soon so will update this review accordingly...." Read more
"Great quality, soft, and warm. The velcro openings on the front and back are great for the stroller and swing...." Read more
"...The fabric is soft and seems durable enough." Read more
"...to find a sleep sack that is 100% Merino because of its many amazing qualities (regulates heat, antimicrobial, natural!) and is machine washable...." Read more
Customers like the warmth of the swaddle blanket. They say it keeps their babies warm and comfortable during sleep time. They also say it's perfect for colder months and regulates heat. Customers also mention that the material is nice and easy on/off.
"...which helps settle baby come sleep time, it breathes keeps her warm and cool and is self wicking which as a new mum nobody tells you how much a baby..." Read more
"Great quality, soft, and warm. The velcro openings on the front and back are great for the stroller and swing...." Read more
"...merino ones are infinitely better - more room, less clingy, better insulation, doesn’t need washing as often, doesn’t hold stains, more snuggly… and..." Read more
"...(regulates heat, antimicrobial, natural!) and is machine washable...." Read more
Customers find the comfort of the product to be great. They say the merino wool inside is soft, and the zipper seems hardy. The length adds weight, which is comforting. Customers also mention that the product is of high quality and smooth.
"Great quality, soft, and warm. The velcro openings on the front and back are great for the stroller and swing...." Read more
"...The fabric is soft and seems durable enough." Read more
"...and is machine washable. The outer fabric is an incredibly soft brushed cotton...." Read more
"...Softest material ever, inside and out, 3)..." Read more
Customers like the sleep quality of the sleep sack. They mention that it helps their baby sleep well throughout the night, it's very soft, and it makes their baby feel happy and safe. Some say that the wool makes it heavy, which helps settle baby come sleep time. Overall, customers are satisfied with the sleep performance of the product.
"...The wool makes it heavy, which helps settle baby come sleep time, it breathes keeps her warm and cool and is self wicking which as a new mum nobody..." Read more
"...He sleeps soundly when napping and I don't have to worry about him getting cold...." Read more
"...buttons on the top and zipper on the bottom and side because it makes sleepy changes and getting baby in and out easy...." Read more
"My 2m old girl weights 8lbs and these fit her so well!She sleep so good in them and waking up happy as ever!!!..." Read more
Customers like the fit of the blanket. They mention that it is very snuggly, fits well, and is comfortable. Some appreciate that it fits from two months to two years and that the sleep sag keeps the blanket in place.
"...insulation, doesn’t need washing as often, doesn’t hold stains, more snuggly… and they’ll last up to around 2 years old, well worth the purchase, we..." Read more
"...its large size, which gives plenty of room to grow, it fits my 6mo old so well (he's on the small side)...." Read more
"We love this sack — it keeps her snug but not too hot, easy to clean and dries quickly!..." Read more
"My 2m old girl weights 8lbs and these fit her so well!She sleep so good in them and waking up happy as ever!!!..." Read more
Customers like the weight of the winter weight bag. They mention that it's not too heavy but heavy enough, due to the natural weight of fabric. The whole thing is substantial without being bulky, and despite its large size, it'll still allow your baby to move around freely. The extra length adds weight, which is comforting. The wool inside is soft and thin, though your baby is always toasty.
"...The whole thing is substantial without being bulky and despite its large size, which gives plenty of room to grow, it fits my 6mo old so well..." Read more
"...Room to grow but lightweight enough he can move around freely, 2)..." Read more
"...It also uses organic cotton which is nice. I thought the winter weight bag was great and sufficiently warm, except the filling in the sleep bag is..." Read more
"...I also like that it has a nice weight to it which I wonder if it helps contribute to better sleep for my baby...." Read more
Customers like the appearance of the sleep sack. They say it looks nice, they love the print and color, and that it's not too colorful.
"...Other pros of this bag are a nice design, the bag seems very well made (good zipper, good seams, etc) and the set comes with a little travel bag to..." Read more
"...The little lamb pattern is too cute. Highly recommend!" Read more
"Love that it has wool for temperature regulation. Love the print/color...." Read more
"...The design is good & it’s cute, but I see no reason for it to be well over $100...." Read more
Customers are mixed about the value of the product. Some mention it's well worth the money, has a hefty price tag, and is fair for 100% wool. However, others say that it'd be better off buying another one for a while, and that it isn't really good for much.
"...more snuggly… and they’ll last up to around 2 years old, well worth the purchase, we have two and rotate them while doing laundry." Read more
"...may seem like a lot up front, but this beautiful sleep sack is worth every penny!..." Read more
"...The product itself is expensive compared to the competition, I have used 5 different brands of sleeping sacs and the woolino blows them all out of..." Read more
"...to fit until 2 years old (she's 5 months now), It's definitely worth the price. I'm so glad I got it!..." Read more
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Top reviews
Top reviews from the United States
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Pros of sleeping sacs: You can change your baby without disturbing them, pick them up and take them out of the room if you need too. Leave them in it after bath time while you read and they stay warm, no waking up and crying because of the sudden drop in temperature from mummy when you settle them in your arms and need to transfer to the cot.
Negative to sleeping sacs, they have all the different TOG rating. We are in Kansas and it can be 74 in the house at 8pm and 65 at 2am.
That is why I love this product. I have marked four instead of 5 stars for comfort because the nature of having a 2month to 2 year sac makes it a little loose around the chest and it can bunch up slightly. But don't let that sway you away from this product.
The wool makes it heavy, which helps settle baby come sleep time, it breathes keeps her warm and cool and is self wicking which as a new mum nobody tells you how much a baby sweats!
The product itself is well made using large zips and decently sized press studs to accommodate for the thickness of the material. It's well thought out and while I haven't used the seatbelt pockets I intend to go in a road trip soon so will update this review accordingly. I do however use these openings to check her nappy without disturbing her.
My biggest negative is that it smells when it's wet which is a great warning when baby springs a leak. But after washing the first few times the whole room smelled like wet wool. This however is a minor irritation and you just need to dry in a well ventelated area.
The product itself is expensive compared to the competition, I have used 5 different brands of sleeping sacs and the woolino blows them all out of the water. As I mentioned earlier I really like having the chest area a bit tighter to prevent it riding up while baby is sleeping, however it's made to last and the next best sleeping bag I have found by ergo baby you need different TOG ratings and a new size every 3-6 months. So while individually Woolino is more expensive it's less in the long run.
You do need two though, now that my baby has discovered her feet I would like to try the legs version so in the evenings she is dressed for he'd and we can put yet straight down without disturbing her if she drifts off.
I can't recommend this product enough as a mother of a baby who just does not stop. Even in sleep she waves her legs around and slams them into the cot just for fun. A blanket comes off. A sleeping bag does not!
My thanks you to the owner of this product!
Faced with the prospect of buying a new sleep sack for my little one who had just outgrown his first one, I was frustrated with the cost of cheaply made polyester fleece garments that will be outgrown in a matter of months. $100 may seem like a lot up front, but this beautiful sleep sack is worth every penny! I love that he will not only fit into it for a couple of years, but based on the quality it seems up to the challenge of lasting through a second child. It's so rare to find baby garments that are truly made to last these days. I love natural wool, and I was thrilled to find a sleep sack that is 100% Merino because of its many amazing qualities (regulates heat, antimicrobial, natural!) and is machine washable. The outer fabric is an incredibly soft brushed cotton. The whole thing is substantial without being bulky and despite its large size, which gives plenty of room to grow, it fits my 6mo old so well (he's on the small side). It seems like every detail was well thought out. Clearly designed by a parent. :) Thank you Woolino! Thanks to this magical sleep sack (and weeks of hard work, lol) my little one had 12 beautiful hours of restful sleep last night.
Reviewed in the United States on October 17, 2022
Top reviews from other countries
Before this sleep sack we were battling him being too hot or too cold but this sleep sack he is always temperature regulated. No more cold hands or sweaty legs.
1-You don’t have to worry about TOG and baby overheating or being too cold
2-it’s SO SOFT
3- it’s expensive BUT it last many months since it’s up until 18 months-ish so it’s better than Halo for example (because you would have to purchase a bigger size in that case)
The only con I see is related to #3. Because it’s supposed to accommodate 2-18 months, there is a lot of loose fabric on the feet to allow them to grow. The halo is snug and there almost nothing left when I am cuddling my 2 month old, but with the woolino there’s some “bulk”. I don’t think it’s a deal breaker and woolino is still my favourite sleepsack but just fyi.