4 Season Basic Baby Sleeping Bag, merino wool, Butterfly
Are you worried about which weight baby sleep bag to use and whether your baby will be too hot or cold while sleeping?
With Woolino, there is no need to worry. The exceptionally breathable Merino wool naturally regulates baby's body temperature, which helps your child to sleep safely and comfortably through the night. It gives you peace of mind and a good night sleep as well.
This amazing baby sleeping bag also saves you buying different sleep sacs for different seasons because you can use it year-round.
Can be used in all 4 seasons - suitable for room temperatures 63-77F (17-25C)
Merino wool regulates body temperature unlike any other fiber, keeping baby warm when it's cold and cool when it's hot
Foot openings allows child to sleep with feet out
Two-way zipper for easy dressing and diaper changes
Zipper guards to protect child's skin and to discourage child from chewing on the zipper pull
Nursery thermometer with dressing guide included
Woolmark certified merino wool; GOTS certified organic cotton; All the fabrics and accessories are OEKO-Tex 100 certified (tested for 100 harmful substances)
FREE shipping to the USA (3-5 business days) and Canada (3-6 business days) on orders of $49 USD or more.
2-Day expedited shipping in the USA for only $2.50. Express shipping in the USA (1-2 days) starting at $9.95, international (3-5 days) starting at $19.95.
FREE returns and exchanges within 30 days of purchase in the USA and Canada.
Machine wash on low (100°F max), use wool or mild detergent. Close zipper. Can be tumble dried on No Heat or Air Dry setting. Hang to dry whenever possible. To refresh and reduce washing, turn garment inside-out and air often.
Made with Woolmark, Oeko-Tex 100, and RWS (Responsible Wool Standard) certified merino wool; GOTS and Oeko-Tex 100 certified organic cotton; Oeko-Tex 100 certified (tested for 100 harmful substances), nickel, lead, and phthalates free YKK snaps and zippers.
What is a baby sleep bag or sack?
A baby sleep bag, also called a wearable blanket or sleep sack, is a bag-like garment or covering worn by infants for sleeping. It replacing loose blankets in the crib that can cover your baby's face and interfere with breathing.
Since 2005, The American Academy of Pediatrics has recommended the use of wearable blankets for safe sleep. Unlike regular blankets, a wearable blanket or sleep sack is worn over your child's sleepwear, so it won't be kicked off and baby stays covered all night. The sleep bag will become part of your child's bedtime routine, providing a sense of security and comfort.
What is the TOG rating of your sleep bags? Are they winter or summer weight?
Our 4 Season baby sleeping bags are designed to be worn year round. They are made from 100% natural breathable fibers and contain NO synthetic filling. Therefore, they do not have a fixed TOG. The fine merino wool lining helps naturally in regulating baby’s body temperature, keeping baby warm in winter and cool in summer.
Woolino sleep bags are recommended to be used in room temperatures 63-77F (17-25C). Simply adjust the layers of sleepwear worn under the sleeping bag to suit the nursery temperature. You can find our suggested dressing guidelines on the back of the room thermometer that comes with every baby sleep bag.
What is the difference between Woolino Ultimate (universal size) and Woolino Basic Baby Sleep Bags?
Both collections have same weight fabrics, merino wool lining and organic cotton outer. The differences are:
Woolino 4 Season Ultimate Baby Sleep Bag has universal sizing: 2m-2yr, underarm snaps for adjusting the size of the armholes, travel slots for use in car seats, strollers, bouncers etc., & both shoulder snaps.
Woolino 4 Season Basic Sleep Bag has simpler design: no snaps and no travel slots; it comes in traditional sizes: 0-6, 6-18, 18-36 months.
When can my baby start using Woolino Ultimate Baby Sleep Bags in size 2m-2yr? How long will my baby fit in this Woolino sleeping bag?
Woolino Ultimate Baby Sleep Bags provide an excellent value as they are designed to fit an average size baby from about 2 months up to 2 years of age. You may start using your sleeping bag when you feel your baby is too big to be swaddled and is breaking out of it. Please use the under-arms snaps to adjust the fit for smaller babies. Our minimum recommended weight is 10lb. or 4.5 kg.
When should I use the under-arm adjustment system?
In general, you need to use the under-arm snaps for babies up to 6 months old. However, this depends on baby’s size, so for smaller babies you may have to use them longer. Please keep in mind that the underarm snaps are to be used for safety reasons, so that the sleep bag fits snugly around baby’s upper body and doesn’t climb up baby’s face.
Do I need more than one Woolino sleeping bag?
Yes, we recommend having two Woolino baby sleeping bags. It is always useful to have a spare sleep bag when one is being washed, to keep at grandparents' place or if baby requires a quick change in the middle of the night. Please enter code BOGO20 at checkout to receive our buy one item, get one item 20% off promotion. This promotion cannot be combined with any other offer.
Won’t wool itch my baby’s skin?
Absolutely not. We use only superfine merino wool, which unlike the traditional wool, feels like silk against baby’s delicate skin. In fact, because of its softness and unique breathability, it is perfect for helping treating conditions such as heat rash and eczema.
Isn’t merino wool too hot for warm temperatures/climates?
Our merino wool baby sleeping bags are perfect for year-round wear in nurseries with room temperatures 63-77F (17-25C). Simply adjust the layers of underwear or sleepwear worn beneath the sack to suit the room temperature. Merino creates a micro-climate around your baby’s body, gaining or losing heat as required to produce warmth in cool conditions and enhance cooling effects in warm conditions.
What should my baby wear when sleeping in a Woolino 4 Season Sleep Bag?
We recommend sleepwear made of natural and breathable fabrics like cotton or merino wool. Please refer to the dressing guide we provide (also on back of your Woolino room thermometer) as general recommendations on how to dress your baby depending on the room temperature. Woolino pajamas are ideal for layering or to wear inside a Woolino sleep bag. The temperature in most rooms will rise and fall throughout the night, and the merino fiber has the remarkable ability to regulate your baby's body temperature.
How do I know if my child is hot or cold?
Please check if your baby is hot or cold while sleeping by touching her tummy or behind her neck. Touching baby’s hands and feet are NOT good indications of their actual body temperature.
Why don’t the sleeping bags have sleeves? Won’t my child get cold?
Our baby sleeping bags are sleeveless to ensure air circulation around baby’s chest. Babies that sleep with traditional sheets and blankets rarely sleep with their arms underneath the blankets. We recommend layering under-garments to ensure your child is perfectly comfortable in their sleeping environment. It is normal for babies to have cold hands and feet due to their still-developing circulation systems and it is not an indication that they are cold. Checking behind baby’s neck or his/her tummy will give you better indication of baby’s body temperature.
Woolino sleep bags sizing chart
Does the sleep bag need to be washed before the first use?
It is not required to wash your Woolino sleep bag before wearing. When you wash it, please follow the care instructions carefully.
How should I care for my Woolino sleep bag?
Merino wool by nature is self-cleaning and does NOT need to be washed as frequently as other fabrics. To refresh and reduce washing, air the garment often.
Machine wash on Low, 100°F /40°C max. Close zipper
Use wool approved or mild detergent - we recommend Kookaburra (available at Woolino.com)
Do not soak or bleach. Avoid fabric conditioners and softeners
Hand wash: Gently soak and squish in lukewarm water. Do not agitate, wring, or rub wool against wool
Tumble dry on “No Heat” setting. Dry flat when possible
Please Contact Us and we'll answer your question promptly.
They absolutely loved it. They liked the material and everything about it!
Very cozy sleep sack! Great quality, and I'm very happy with my purchase.
Loved the baby sleeping bags I ordered. They were gifts for my daughter-in-law and niece both expecting their first. The customer service is absolutely fantastic.
We've had so many different sleeping bags all end up with holes in them a few months after using. The quality of this one is the best!
We love these sleep sacks! They are so soft and cozy.
Excellent products and customer service
My baby loves her new sleeping sack, the change from the old one was not an issue at all, she loves to be snagged.
soft and warm..love them
Feels great.... easy access to diaper change and ❤️ the butterflies
I absolutely loved this sleep sac for toddlers. It was beautifully made! Sizing was perfect not to lose around the chest but with tons of room to grow . My daughter is a very tall 2 year old and it fit her perfect. Her almost 4 year old sister could fit in it as well since it is long. The unfortunate part is that my daughter wouldn’t give up her old out grown fleece sleep sac. This company was absolutely amazing in handling returns. I will definitely be a repeat customer and have shared with friends how much I love this company’s products as well as excellent costumer service.
Woolino sleeping bag seems very comfortable for my baby. She is not too hot or too cold in it regardless of the weather. She now started taking naps in her bed (finally!) and we use the same Woolino sleeping bag that we use during the night. The difference in temperature doesn't seem to be a factor when using it at all. Great product!
Best sleep sack ever! Worth every penny. I purchased the 4 season sleep sack so I didn’t have to purchase different ones for each season. It feels almost like a weighted blanket but very comfortable. I was using. A different brand but my baby sleeps way better with these.
My daughter sleeps so soundly in this sleep sack and is always the perfect temperature...never too hot or too cold. This is a really amazing product, a great investment!
It is vary comfortable! Thank you!
Love these sleep sacks for our twins. Great quality, comfortable, can be used for a long time. Adorable prints. We went straight from swaddling to these and it’s been a surprisingly easy transition.
We love all of our Woolino sleep sacks. We have used them year-round in Michigan. They keep my daughter warm in the winter and cool in the summer. They wash well with gentle detergent, don’t pull, and the zippers are great. This particular style doesn’t have the car seat belt pass-through which is nice because there’s a little less bulk.
I’ve had a lot of Woolino sleep sacks over the years, but never one this size.
I have to say I was a bit disappointed with the size of the arm holes.
My little one who was 2 had no problems getting her arms out of it all the time (which is a definite safety concern when she is sleeping and in her crib unmonitored.)
Lucky for me, I am handy with a sewing machine, so I just sewed the holes smaller until she gets bigger.
I feel like They should really have the button that the other 4 season sleep sacs have.
Other Then that, we love it!!!