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Woolino 4 Season Baby Sleeping Sack with feet, Merino Wool Walker Sleep Sack, 18-36m, Butterfly

  • Based on 674 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, Sep 1
Order within 20 hours and 9 minutes
Available payment plans shown during checkout

Size: 18-36 Months


Color: Butterfly


Features

  • Merino Wool
  • 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.
  • Optimal weight merino wool REGULATES BODY TEMPERATURE so it can be used in all 4 seasons. Available in three sizes: 6-18, 18-36 months and 3-4T. Use over regular sleepwear to take the place of loose blankets.
  • FOOT OPENINGS allow for mobility when child is awake. Generous size so child can tuck feet in when sleeping. Unzips from bottom for easy diaper changes. Machine-washable.
  • PREMIUM QUALITY PRODUCT, comes with 6 months warranty from a US company with US customer service. Buy with confidence from Woolino, the makers of the #1 selling and #1 rated baby sleeping bag in USA and Canada since 2010.

Product Dimensions: 9.65 x 26 x 0.01 inches


Item Weight: 13.7 ounces


Department: Baby-boys


Manufacturer: Woolino


Item model number: FeetSS18-36moButterfly


Is Discontinued By Manufacturer: No


Fabric Type: Merino Wool


Fabric cleaning: Dark


Care instructions: Machine Wash


Assembly required: No


Batteries required: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Sep 1

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.

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Top Amazon Reviews


  • Didn’t receive Room thermometer
Size: 18-36 Months Color: Butterfly
Editing 3wks after using: My 22 months old daughter has been wearing it during 68F with long sleeves, long pants to 78F with only the sleeping sack with feet. So far so good. The temperature at place I'm living (Bay Area) varies during day and night, so I'm glad she's not too hot when it's 78F and not too cold when the temperature drops to 72F late night. This is August, not sure if this sack will still work in September temperature. Looking forward to test it all year round to see if this sleeping sack really covers all seasons. -------------------------- I read the reviews and it seems very nice so I made the purchase but it was thinner than I expected. Also my shipment didn’t come with a Room thermometer so I’m not sure how to dress her properly. She woke up having cold hands when temperature was 72F and she had one long sleeve and one long pants on. Not sure if I’m doing right, would like to have the guidelines on how to dress my child at least. Since the thermometer was missing, I’m not sure how likely we are able to keep our child comfortable, we will try one more by adding/removing more layers on her ... show more
Reviewed in the United States on August 2, 2023 by Amazon Customer

  • Love this sack, 10 months already
Size: 18-36 Months Color: Nightsky
So I ordered the footless sleep sack before this one and I dried it on the wrong setting and it shrunk. It was already time for me to get the footless one. I ordered this one and it lasted really long. I love that I don’t have to be concerned that she’s hot or cold. I just have to make sure I have the right pjs underneath. It’s almost gonna be 10 months in 10 days. The top material that goes over the zipper started to become a hole a short while ago. I wonder if it’s that I’m not using detergent for wool or just normal ware and tear. I’d love to know how long these sacks should last. I put a bandaid on it because the plastic started scraping my daughter neck. It’s a bummer it got a hole besides that it’s great. I would have loved to save it for a future child. I’ll try to maybe get it sewed. I did just order a bigger size , I can’t see myself using any other sack. ... show more
Reviewed in the United States on May 5, 2023 by Dan & Mel Dan & Mel

  • Amazing sleep sack
I’m in love with this sleep sack, keeps my baby warm and I’m never worried about temp now, also he can walk in the crib freely so no more falling.
Reviewed in the United States on June 13, 2023 by Victoria Shechtman

  • Keeps toddler warm!
Size: 3-4T Color: Nightsky
My daughter has used Woolino sleep sacks since 6 months! We only had one 2-4 years sleep sack and instead of getting another one we got the footie one for when she moves to Toddler bed and to use as a back up prior to that move. She needed it one night and loves it! Stays on her unlike a blanket.
Reviewed in the United States on May 13, 2023 by Mari

  • Life saver
Size: 3-4T Color: Gray
We moved into a house with a wall heater, and this place is poorly insulated. This is a temporary situation for us, so in the meantime, I bought the woolino sleepsak and now I dont have to worry if my kids are too cold. It really made all the difference. Before, in their old sleepsaks that were made of fleece, the kids felt cold, but after buying the woolino sleepsak, they feel nice and warm and I can finally get some sleep at night. These blankets are so expensive, but I am glad I bought them. ... show more
Reviewed in the United States on January 1, 2023 by Theresa

  • Phenomenal quality! So glad I splurged
Size: 18-36 Months Color: Nightsky
I cannot say enough positive things about this sleep sack. I bought the size 18-36 months with feet, and my 7 month old fits the guidelines for it being safe to wear (his head does not fit through the neck hole, he’s a big boy) and the roominess is amazing. No more kicked off blankets. No more chilled baby toes. I love that it comes with a dressing guide and thermometer! What an awesome feature. I hung the thermometer on a door handle by my diaper changer and can easily see what temperature it is, flip it over, and get suggestions for what layers to put on my baby so he doesn’t get too warm or too cool underneath this sleep sack! It is lightweight, but heavy enough to feel robust and comforting. The cotton and wool blend is nothing less than luxurious. I’ve had multiples times I had to wash this sleep sack, as my little one still spits up quite regularly. It was daunting at first, but really cleaned up perfectly. I used 1 Tbsp of eucalan’s jasmine scented wool wash called “wrapture” and put it in my washing machine for a cold rinse and spin cycle on delicate and then hung to dry. It is such a perfect weight, it dries quickly without being cumbersome. I gave it a quick 10 minute fluff in the dryer and it was back to cuddly super soft and ready to go again the same day. I cannot day enough wonderful things about this sleep sack! It’s definitely a keeper! ... show more
Reviewed in the United States on July 1, 2020 by gigglebugmama

  • Best of both worlds, benefits of woolino sleep bag with added ease of movement, but not without flaws.
Update: Daughter is now 18 months and 96th percentile for height (almost 34 inches) and it's still large on her, lengthwise. Or rather it's just the issue of the cuffs, which are loose and not stretchy, so I have to roll them up if she wants to walk around in this thing. They don't stay rolled up very well though so I have to keep an eye out to make sure they don't unroll and trip her up. I might take the cuffs off and sew new ones on. If the cuffs would just stay around her ankles, it'd be fine, since the actual blanket part if a couple of inches off the ground. That said, I think it's the best option out there. My daughter hates hates hates regular blankets but often refuses to be changed out of this thing in the mornings. Original review: So happy that Woolino started making sleep bags with foot holes! It's the only reason I wasn't buying a sleep sack before. My daughter has a floor bed and thus has access to her room if she gets up and wants to play. Now I know she's nice and warm but also has the option to walk/crawl around without tripping. She's almost 11 months (85th percentile for weight and height) and I do think it's a bit large, considering it's sized for 6-18. I have to hike up the leg cuffs, roll them a few times, and then secure them by rolling her pajama pant legs up over all of that. Seems to work okay for now. I wish the leg cuffs were not so loose though so that they would stay above her feet. As it is now, they slide down and she would definitely trip (hence the elaborate cuffing). Other than that, I love it! And I guess it'll probaby last us a while. Im guessing past 18 months. Our heating is a bit inconsistent and I was actually afraid she was going to be too hot in this (with woolino pajamas underneath) but she seemed very comfortable in the morning, not cold and not sweaty at all. Worth the money! ... show more
Reviewed in the United States on February 6, 2017 by Polina

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