

🐑 Sleep Smarter, Grow Together — The Only Sleep Sack Your Baby Needs!
The Woolino 4 Season Baby Sleeping Sack combines premium Australian merino wool and organic cotton in a single adjustable size that fits infants and toddlers from 2 months to 2 years. Designed for year-round use, it naturally regulates body temperature to reduce sleepless nights, features easy-access zippers and snaps for hassle-free diaper changes, and is backed by multiple parenting awards and certifications. Durable, breathable, and eco-friendly, it’s the ultimate sleepwear investment for modern parents seeking comfort, convenience, and sustainability.

















| ASIN | B004FFJNAY |
| Additional product features | Breathable |
| Awards won | 2012 Creative Child Top Choice of the Year, Amazon.com #1 Rated Sleep Sack, Mom's Choice |
| Batteries required | No |
| Best Sellers Rank | #27,767 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #367 in Baby Boy's Clothing #481 in Baby Girls' Clothing |
| Care instructions | Machine Wash |
| Customer Reviews | 4.7 4.7 out of 5 stars (4,104) |
| Dishwasher safe | No |
| Is Discontinued By Manufacturer | No |
| Is portable | No |
| Item Weight | 1.1 pounds |
| Item model number | FO-04EP-2DAS |
| Material Type | 100% Merino Wool Lining / 100% Organic Cotton Outer |
| Minimum weight recommendation | 11.02 Pounds |
| Number Of Items | 1 |
| Product Dimensions | 12.7 x 9.9 x 1.7 inches |
| Style | Transitional |
| Target gender | Unisex |
D**A
Ótimo saco de dormir
Um ótimo saco de dormir. Serve para todo o ano o que evita comprar vários sacos com tog diferentes. O caro sai barato. Pena não haver na Amazon as outras opções:dos 0-6 meses, dos 6-18.
B**H
Best sleepsack
After trying many sleep sacks, I was tired of constantly thinking about TOG values, size/length, and having back ups for washing. I bought a Woolino and haven't looked back. They are roomy but customizable to fit baby. They have snap closures at the shoulders so if you have a baby that hates putting their arm through the armhole, these are great. The extra room for growth also means room for movement when my baby is settling and self soothing with some wild movements in the crib. He never gets tangled in it and hasn't seemed too hot, though we haven't used this in the summer yet. I've washed a few times and it has held up well. Dryer with no heat only, and once in desperation to get the laundry done quickly I did a moderate spin cycle instead of gentle, and it stood up fine. I compared it to a new one that I had bought as a backup and didn't see any shrinkage after washing in this manner. We had some spit up/throw up/drooling mishaps and there was no staining, but I did wash promptly following any breast milk debris being on it. Very high quality feel. The merino wool has withstood a lot of kicking and pulling from my baby getting his feet up and pulling down on it, stretching and causing friction to the layers. You would never know. Zippers never catch or get caught on the material. Snaps never feel weak or weaken the fabric they are attached to. FYI had it for 3 months and my son is 6 months old. Used swaddle Up, ergo pouch, and halo sleep sacks previously.
Z**I
This is NOT a 4 season sleeping bag
I can only share what other people wrote. This is NOT a 4 season sleeping bag I trusted the recommendations but this sleeping bag is rather thin and I found my baby crying and very cold in this at night, so she consequently was sick for a few days! I feel really disappointed, definitely not worth the price!
W**Y
Best thing ever
We love this! Our little baby loves it. It is super easy to clean and is very easy to use. And he says at a comfortable temperature as long as we dress him appropriately.
B**W
My 14 month old sleeps wonderfully in this
I wish I would have bought this sooner. Yes, it is more expensive than many other sleep sacks on the market, but I've been through 2+ sizes of sleep sacks in other brands and could have saved the money by starting with woolino. My 14 month old sleeps wonderfully in this. We began using it around 11 months old and she is nowhere close to growing out of it. She's on the tall side and will easily be able to use this until she's 2, maybe longer if she still tolerates it. I love putting her in a sleep sack because we have no issues with her climbing out of the crib. It's very soft and I love that she can wear it year round - no more rotating out a muslin or fleece sleep sack depending on the season. I machine wash and hang dry and it turns out great. It has been accidentally run through the dryer but this caused no issues. We love it!
Trustpilot
2 weeks ago
1 month ago