Aden + Anais – Winter Baby Sleeping Bag Review 2017

The “Warmest” Sleeping Bag – Aden + Anais

(I received a Aden + Anais Cosy Muslin Sleeping Bag for the purpose of this review. All opinions are my own.)

Aden and Anais Winter Baby Sleeping Bag

About the Aden + Anais Cosy Muslin Sleeping Bag

 Cost: $69.95

Available Togs: 3.5 Tog for the Cosy Muslin Range.

NOTE: Aden + Anais have other tog rating sleeping bags available, however they’re not in the Cosy Muslin fabric. They are titled differently, such as “Silky Soft” (0.5 Tog) or “Classic” (0.6 Tog) Sleeping Bags.

Available Sizes: Small, Medium, Large, XL (measure by chest width and length of the product, both in cm and inches).

Zipper: Single front zipper, standard.

Material: Premium Flannel Muslin made from 100% brushed cotton, with a 100% hypoallergenic fill.

Washability: Machine wash in cold water with like colours. Tumble Dry Low.

High Fire Danger

Available Designs: Fate (Light Grey with white stars) or Grace (Light Pink with White Stars).

Other Features: Featured as one of Oprah’s Favourite Things in 2016.

Where you can get it from: Babies ‘R’ Us; MYER (limited stock); The Sleep Store ONLINE (AU); Aden + Anais ONLINE store.

Website and Socials: WEBSITE // FACEBOOK // INSTAGRAM

Aden and Anais Winter Baby Sleeping Bag 8Our Review of the Aden + Anais Cosy Muslin Sleeping Bag:

Tog/temp: 3.5 Tog                                                Size: Large (76.8cm length)


The Aden + Anais Cosy Muslin Sleeping Bag has a simple design with the light grey fabric and white stars covering the whole sleeping bag. With the size selection as a large (measured), it is quite small compared to a lot of the other sleeping bags that have a large age range. It is relatively fitted, suiting Starfish’s needs to have a tight fitting sleeping bag.

The Cosy Muslin is an innovative fabric specifically designed by Aden + Anais, aimed at providing more breathability with the fabric as flannel isn’t usually breathable. With the open weave of the fabric, the Flannel Muslin blend aims to create more airflow to reduce the risk of overheating.

Aden and Anais Winter Baby Sleeping Bag 4


The Cosy Muslin Sleeping Bag feels extremely warm, and was warm for Starfish to go in. I did find that he would still get very sweaty in this sleeping bag, particularly during the day sleeps. This resulted in a bit of trial and error in regards to what to dress him in to avoid overheating (as the night times would be significantly cooler). Unfortunately the Aden + Anais Sleeping Bag didn’t come with a guide of what to dress baby in, so it was a lot of playing around for different sleeps to get it right (and if you don’t have a thermometer in the room to know the temperature, this can be trickier). However, on the very cold nights we did find that Starfish slept very well and was kept extremely warm and snug. The Cosy Muslin Sleeping Bag is definitely perfect for the cooler climates (especially if you’re getting freezing nights!).

Aden and Anais Winter Baby Sleeping Bag 3Aden and Anais Winter Baby Sleeping Bag 5


This sleeping bag has a very simple design – single zip, no travel features, and tighter fitting. It wouldn’t be ideal for transitioning a sleeping baby into unless you had purchased a larger sleeping bag size (which isn’t recommended due to safe sleeping guidelines). If you’re looking for a simple, no nonsense sleeping bag to keep your baby warm, this is the perfect solution.

Aden and Anais Winter Baby Sleeping Bag 6


While it is a tighter fitting sleeping bag which Starfish loves, it would sometimes warm him up a bit too much during the day times. If you’re in a cooler climate and prefer a simple, easy to use sleeping bag, the Aden + Anais Cosy Muslin is the perfect baby sleeping bag for you and extremely worth it’s value (being the cheapest of all the sleeping bags, except the Best and Less sleeping bag).

Aden and Anais Winter Baby Sleeping Bag 7

 What the Sleep Consultant Said:

Linda agreed on the very warm nature of the sleeping bag. She had a big emphasis on all the bags, but particularly the cosy muslin, to be aware of sweaty babies. If you know you have a baby that excessively sweats, this might not be the ideal. Linda mentioned that the Aden + Anais bag would be perfect for the cold climates like in Canberra and further down south.

Aden and Anais Winter Baby Sleeping Bag 9

Stand out Features:

  • Innovative weave of Flannel and Muslin fabrics to keep baby warm with airflow.
  • Simple, sleek design.
  • Simple and easy to use sleeping bag.
  • Tighter fitting – no mermaid tail.


  • Beware of what you dress baby in when putting them in the Cosy Muslin Sleeping bag, and what the temperature is to avoid overheating – this may take some trial and error.
  • Ideal for cooler climates.
  • The fabric may be prone to pilling.

Aden and Anais Winter Baby Sleeping Bag 2

Read the other Winter Sleeping Bag Reviews:



About Fi Morrison

Fi is a mum to her beautiful, 1-year-old baby boy who she affectionately calls Starfish. She started Mumma Morrison as a way to document her life with her son, but also aims to create a supportive and encouraging community for new and prospective mums. She is returning to part-time teaching in July. Fi and her family live in Sydney.

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