









🌙 Snuggle smarter, sleep better — the ultimate baby sleep upgrade!
The Woolino 4 Season Ultimate Baby Sleeping Bag combines 100% Merino wool lining with a GOTS certified organic cotton outer for natural temperature regulation and supreme softness. Designed for babies aged 2 to 24 months, its adjustable snaps and two-way zipper ensure a perfect fit and easy diaper changes. This award-winning, safe, and durable sleep sack supports year-round use and is machine washable, making it the trusted choice for parents seeking premium comfort and convenience.


















| ASIN | B004FFJNAY |
| Best Sellers Rank | #24,793 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #292 in Baby Boy's Clothing #398 in Baby Girls' Clothing |
| Brand Name | Woolino |
| Closure Type | Zipper |
| Collection Name | All |
| Color | Navy Blue |
| Customer Reviews | 4.7 out of 5 stars 4,100 Reviews |
| Fabric Type | 100% Merino Wool Lining / 100% Organic Cotton Outer |
| Fit Type | Universal |
| Item Height | 1.7 inches |
| Item Weight | 1.1 Pounds |
| Manufacturer | Woolino |
| Material | 100% Merino Wool Lining / 100% Organic Cotton Outer |
| Occasion | sleep |
| Pattern | Solid |
| Product Care Instructions | Machine Wash |
| Size | 12.7x9.9x1.7 Inch (Pack of 1) |
| Style | Transitional |
| UPC | 729440307516 |
| Unit Count | 1 Count |
M**N
Warm, cozy, and economical...
I put off buying this thing for 6 months, due to price, and now I wish I hadn't waited. Apparently, in order to keep babies from going up in flames, infant sleepers have to be either fleece (which stops being fluffy after only 3 washes), treated with fire resistant chemicals (um, no), or snug fitting (itchy!). Well, I was cheating by buying super big sleepers for my son, and just letting him sleep with floppy footies. Unfortunately, now that he is 9 months, the "snug fitting" sleepers are ridiculously tight, and he was waking up with freezing feet every night, even the fleece sleepers-- which are 20 bucks a pop where I live, and have to be replaced every month, because they pile up. Plus, he started crying whenever I zipped them up, because who on EARTH wants to sleep in a compression sack-- I certainly wouldn't. I itch when my tank tops are too tight! So I finally pressed the button and got this little gem. I've used wool baby products before, so I would encourage anyone to "lanolinize" this every few months, which helps the wool resist moisture/pee, softens it, and allows you to wash it less, and makes it hang dry quicker. However, this is as soft as Egyptian cotton and the company says it's washable, so you don't really need to. (I always handwash with a little Dr. Bronners and lanolin, though, personally). This bag has sturdy snaps (no scratchy velcro), which allow it to be comfy but form fitting on the upper body. Double snaps on the side comform to a smaller or bigger baby. Even though my son has TONS of room in the foot area to grow into, I have zero concerns that he will get twisted up in it... and he's a hard-core squirmer. Even with his constant caterpillar scooting and rolling, he's never complained or been uncomfortable in this, and when he does wake up at night, his feet are WARM, because he's basically sleeping in a giant mitten. It has a zip at the bottom for nighttime changes or, possibly, if you're kiddos feet are getting hot. There's an open/close spot at the crotch area for safety belts to go through. Plus, this saves money, because (underneath) the baby is sleeping in the same one-sies or shirts he/she would be using during the day, so you don't have to keep getting longer foot-ie pyja, or replacing the scratchy fleece ones. Don't hesitate to buy this wonderful product. It's cozy, quality construction, and economical, in the long run. Update: still going strong at 2 years, with occasional washing, but no special treatment whatsoever. It's even been thrown in the regular, high heat dryer several times, although I wouldn't recommend doing so regularly. My son sees the sack and knows it's time to "snuggle up" for bedtime. Love it!
A**R
Worth the price
Great quality its soft and very well made. I am loving the temperature control aspect, with the changing weather i worry shes too warm or cool, this has helped ease that soo much! This was an easy transition to from the merlin my daughter has been loving.
E**.
WORTH its price!
We used, LTD, Ergobaby, Kytebaby and regular sleep suits.. Baby wasn’t sleeping well. I’m talking about hourly waking ups!! Until I said, risk it, I ordered two of these. Quality and softness extraordinary!! Even though we kept the room between 68 to 72 nothing worked but Woolino! She is sleeping really good now and we will be using this really long time so hundred percent WORTH its price!! Others I spent hundreds and wasn’t able use more than a few months. I’m so happy with this purchase. Cozy sleeping baby 💤
G**S
I wish this for every baby!
Love this sleep sack! If you're anything like me - first time mom over here - I was obsessed with whether baby was too hot or too cold from day one. Overheating or being too cold can be uncomfortable for baby and prevent them from sleeping, and severe overheating has been linked to SIDs. Thus, keeping baby at the perfect temperature - especially as a newborn when they're bodies are still not able to regulate - has been a constant concern of mine that required much thought and effort and trial and error with what temperature to set the thermostat in our house, how many layers to dress in, etc. For my now 7.5 month old, we've been through a number of swaddles and sleep sacks. We live in Los Angeles, so pretty mild weather but still gets chilly in the winter, enough to warrant turning on the heat and obviously, very warm in the summer. We keep the baby's room between 68-72 degrees, which is the recommended range (an indoor thermostat is a must for baby's room! We have this one and we're happy with it: ThermoPro TP55 Digital Hygrometer Indoor Thermometer Humidity Gauge with Jumbo Touchscreen and Backlight Temperature Humidity) In the warmer months we've been dressing baby in a lightweight 100% cotton footLESS pajama or long-sleeve onesie with pants no undershirt, no socks and in the cooler months, footed 100% cotton pajamas, sometimes the slightly thicker organic ones, and no undershirt (please, don't dress baby in polyester, especially not at night, it does not breathe and can cause overheating). The sleep sack comes with a guide as to how to dress for what weather. We basically just followed it This is a very high quality sleep sack, from the zippers to the snaps, to the soft material and design, the weight is really nice, not too heavy but heavy enough to feel cozy. On a typical spring to summer evening, the temperature in the nursery can range from 72 to 68 or sometimes even 67 degrees farehnheith. The sleep sack keeps baby cool and dry, and warm and cozy. Just perfect. I'm not attributing the fact that baby sleeps really well ENTIRELY to the sleep sack but I do think it has helped. And also has alleviated my concerns and give me peace of mind. Priceless.
L**A
Soft and comfortable
Baby stays warm but not hot. Very comfortable and soft! High quality product!
N**H
Improved sleep for baby and more importantly Mummy!
I have to say that I am a huge fan of the concept of sleeping bags, not just because of SIDS but because they are easy. This product is by far the best I have tried of 5 including Love to Dream, Bonds, the original Sleeping Sac, Ergo Baby, and standard Big W. 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!
L**Q
Worth it
I procrastinated purchasing this based off the price and instead purchased Kyte sleepsacks as they were a bit more affordable. However, those are based off sizes so I needed to purchase more once our baby grew. The material was causing her to overheat even when following TOG specifications, so I decided to give this a try and it is well worth the money. You can tell right away the difference in quality and material. Do yourself a favor and just get it. It is definitely worth the investment especially with it growing with baby. We will be purchasing more with the black Friday deals.
M**Y
Sleeps comfortably through the night
My 9 week old sleeps very comfortably through the night in this. We’ve already ordered another one. This has the perfect amount of weight to calm our baby. It’s part of our bedtime routine to do a diaper change, put a sleep sack on, then nurse until she falls asleep. It’s only been a few nights that we’ve used this sleep sack but she’s started to smile when we put it on, which she hasn’t done for other ones. She’s very cozy in it! Plus it’s adorable, soft, and held up just fine in the wash (no shrinking) with warm water, dreft detergent and low heat in the dryer. It’s *relatively* simple to put on, but I wouldn’t try to put it on her asleep as it seems likely to wake her up. So we take the risk of her spitting up on it during her pre-sleep feed. That’s 50% of the reason I bought a second one…but worth it to have a second anyway. The one *sort of* downside is that it’s very long on a 2 month old, almost comically long. It won’t be a downside as she grows however, and for now it provides more comfy weight around her legs (which I’m sure is part of why she sleeps better, as she normally kicks herself in a circle around the bassinet through the night). The length also provides plenty of space for her to stretch her legs out as she’s a relatively tall baby and loves to stretch, which other sleep sacks limited and resulted in me buying swaddles that zip open at the bottom before switching to sleep sacks. But with those swaddles there wasn’t any weight on her legs so she still kicked a lot at night, and this sleep sack fixed that.
Trustpilot
5 days ago
1 month ago