MookieMerino 4-Season Sleep Bag

(17 customer reviews)

MookieMerino is proud to offer the most luxurious baby sleep bag for your baby.

Created with 2 layers of sumptuous Extra Fine merino wool, it is extremely soft and cosy for your Mookie. We only use Woolmark’s approved 17.9 micron* Australian merino wool. The craftsmanship of the bag is of the utmost quality. We are proud to offer a natural sleep bag that is genuinely as good for your child as it is for the sheep and the planet.

The award-winning MookieMerino’s 4-Season Sleep Bag is your premium all-in-one solution to ensure the best sleep for the baby and the parents! Our sleep bag is suitable for little Mookies between the ages of 2 to 24 months plus (EU size up to 86 cm) across all four seasons.

The MookieMerino 4-Season Sleep Bag is the perfect product for your child or to offer as a present. It comes in a beautiful gift box, making it the perfect organic baby gift for a baby shower or newborn baby.


*Microns denotes the quality of merino wool: the lower the number the better the quality. A 17.9 micron garment is deemed Extra Fine and is recommended for babies according to Woolmark which is a worldwide wool association. Extra Fine merino is a super premium wool used in the highest quality knits.



The award-winning MookieMerino wool sleeping bag has been meticulously designed, from concept to fabrication, with baby’s needs and safety in mind, without compromising on quality and excellent craftsmanship.

The MookieMerino 4-Season Sleep Bag is a proud recipient of the prestigious Woolmark Nurture certification which applies only to the finest Woolmark-certified materials. It is a symbol of quality assurance, proving fibre content and fitness for purpose through strict testing, which follows global industry standard, making it a coveted sleep bag.

The merino wool and trimmings are proudly certified by OEKO-TEX Standard 100 Class I for babies and this certification also means it is meeting the European REACH standards. The wool is from non mulesed sheep as certified by Deloitte and our factory has been audited by BSCI (Business Social Compliance Initiative).

Our baby sleeping bag is conforms to both UK BS 8510:2009 and AS/NZS 1249:2003 standards which are kids’ sleepwear safety regulation in the UK and Australia/New Zealand.

The MookieMerino 4-Season Sleep Bag is perfect for a room temperature between 16 and 20 degrees Celsius (61 and 68° degrees Fahrenheit) – the recommended room temperature by experts – and colder/warmer room. If the room is colder and the baby feels cold (by touching the baby on the back or chest), you can add a thin long sleeve top underneath the sleep bag.

Our merino is 200 GSM (Grams per Square Metre) jersey per layer – total of 400 GSM for a single merino baby sleeping bag since it has 2 layers – making it soft, light and comfortable to wear.

You can easily wash our wool baby sleeping bag in the washing machine, ideally inside out, at a gentle cycle (maximum 40 degrees Celsius / 104 degrees Fahrenheit) using a wool-approved detergent. Please do not bleach nor use fabric softener, do not tumble dry and dry away from the direct sunlight. There is no need to wash your sleep sack often, since merino wool is antibacterial meaning it is germ, dirt and odour resistant. Our merino wool baby sleeping bag dries quickly.

As for the size of our merino baby sleeping bag, the length is 89 cm (35 inches) and the width at the feet is 45 cm (18 inches).

To see what set us apart from other sleeping bags click here.

To watch a short video from Woolmark explaining why merino wool is best for your baby please click here.

Customers Quotes - Product Pages - Merino Wool Sleeping Bag
Customers Quotes 2 - Product Pages - Luxury Baby Sleeping Bag

Additional information




2 to 24 months

17 reviews for MookieMerino 4-Season Sleep Bag

  1. nadinkettner

    We love our MookieMerino sleeping bag! The quality is great, it’s cosy, dries really fast and adapts great to any temperature. Pity my older daughter was aready two when we bought it and grew out of it soon but we just got a new baby and she’ll definitely start using it soon and can use it for a long time 🙂 Keep up the great work!

  2. Happy Daddy

    We are very happy with our MookieMerino sleep bag. It feels incredibly soft. I wish they made one for adults! Our baby has slept really well in it and always seems to be at the right temperature. I highly recommend it.

  3. Marie

    Awesome product we love it! Well built with quality materials.

  4. Sue Ley

    Great product! It is so good to know the baby is not going to overheat or get cold….It feels beautiful and my granddaughter looks so comfortable in her cot in her sleeping bag. It is the best one I have seen (and I have many grandchildren).

  5. Julmon

    Vraiment contente de cette turbulette de haute qualité ! Elle est très douce donc la température du corps de bébé reste toujours stable et idéale pour lui ! Sa possibilité d’ajuster la taille en fonction de l’âge et son espace pour faire passer la ceinture de sécurité sont vraiment bien pensé et lui permet de toujours dormir dans son sleep bag préféré même à l’extérieur de la maison.
    C’est une turbulette que je recommande fortement ! Bravo à la fondatrice !!!

  6. Charlotte T.

    Doux, bien fait et bien pensé. Et rare sont les vêtements de bébé qui durent 2 ans! Un produit de qualité et très original à offrir en cadeau à un shower de bébé! 😉

  7. Faure

    De belles nuits, cette turbulette douce et legere grandit avec mes enfants! Je l’emporte partout, en toutes saisons et surtout elle s’adapte a mon siege auto.

  8. Philippe B

    Très satisfait par cet achat, notamment par la qualité après de multiples lavages. Pratique aussi pour mon enfant (réglable et permet de garder son enfants bien au chaud)

  9. Sarah

    We absolutely love this sleep bag. This being my third baby I’ve tried quite a few bags and have found the MookieMerino the best. Such a beautifully designed and high quality product. Will be using this for a long time!

  10. Mariebelle

    This is the softest sleeping bag I have ever seen. My son loves it and has been sleeping really well in it. The snap buttons make it very easy to put on and off. Highly recommend it.

  11. Stephanie Bourne

    I won this sleeping bag back in December last year and I wanted to wait until I’d given it a good test. I can’t say I’ve consistently used it with my now 21mo. We bedshare and I sometimes forget it, however the nights I do use it he sleeps so well. We’ve also used it on long car journeys for him to nap. The adapter point is fantastic, although can be a little fiddly and the velcro holes were a little annoying when we first began using it as a foot would often emerge out of it in the night…although never caused a problem. The sleeping bag is great at keeping him nice and warm, but never too hot. He absolutely loves getting in it! My youngest also suffers with eczema and very sensitive skin, which this has never aggitated or caused flare ups. Overall I’d say it’s a fantastic sleeping bag, well made and being completely natural is a huge tick for me.

  12. Dr. Sarah Mitchell

    I’ve recommended this sleep bag to many of my clients. It’s made of fine merino wool. I love the wool as it helps temperature regulate and be more comfortable overnight. I also love that you only need 1 sleep sack from age 2 months to 2 years! And that you can use this 1 bag all year round. It’s warm enough in the winter with 2 layer merino and light enough in the summer. I highly recommend it.

  13. Chris

    I bought this sleeping bag as a gift for a newborn. The parents were very happy with it and so was I when I saw the quality first hand. The packaging it came in was beautiful, which really added to the gift.

  14. Suzie Riordan

    I sent a second sleeping bag to a friend as a baby present . She was so grateful as the pure merino is so natural and she is very conscious of natural products being best for her little boy. Thank you for developing this beautiful ,simple,natural product .

  15. Jenny Simon

    Très bon produit, mon bébé adore ! La qualité est juste géniale et l’adaptation au siège auto est très pratique! Je recommande vivement ce produit !

  16. Cloris

    The material of this sleeping bag is high quality soft merino wool. Initially I worried about it might be too hot for my 9-month-old because we live in a tropical climate. It turns out it helps her regulate her temperature and she sleeps very well in it. I also love the Velcro adaptor points – a thoughtful small touch that enables me to use the sleeping bag on a pram or a car seat.

  17. MookieMerino (verified owner)

    I’m never worried about my baby being too hot or cold. I love how soft and light it is!

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