A secure, multi-functional swaddle and sleep sack in one, designed to be worn for sleep from birth.
Size Guide
Cocoon Swaddle Sack
Please use your child's weight to find the most appropriate and safe size for them. To comply with safety requirements, our Cocoon Swaddle Sacks have a firm fit around the neck, shoulder and chest area to prevent your little one from slipping inside. You should be able to put 2 fingers inside the neck opening for the correct fit. Please do not size up to the next size until your child meets the weight requirement, for safety reasons.
| ergoPouch size | 00000 | Newborn | 0-3M | 3-6M* | 6-12M |
|---|---|---|---|---|---|
| Same as size | 00000 | 0000 | 000 | 00 | 0 |
| Pouch length (cm/inch) | 47cm / 18.5" | 52cm / 20.5" | 60cm / 23.6" | 70cm / 27.6" | 76cm / 29.9" (0.2 & 1.0 TOG) 80cm / 31.5" (2.5 TOG) |
| Child weight (kg/lb) |
2-3kg / 4-7lb | 3-4kg / 7-9lb | 3-6kg / 7-13lb | 6-8kg / 13-18lb | 8-10kg / 18-22lb |
| Child height (cm/inch) maximum | 50cm / 19.7" | 55cm / 21.7" | 62cm / 24.4" | 62-68cm / 24.4" - 26.8" | 68-76cm / 26.8" - 29.9" |
*Previously size 2-6 months
- Free delivery on orders over $70*
- Estimated dispatch: 04 February 2026
- 30-day returns and exchanges
- Julie P.Verified Buyer1/19/26ReviewingCocoon Swaddle Sack 2.5 TOG WillowRated 5 out of 5 starsWarmth & Comfort
Gave my baby the warmth and comfort I was hoping for
- David S.Verified BuyerWhat is your favorite feature of the Cocoon Swaddle Bag? Easy to use, Cosy fit, Soft material1/19/26What is your favorite feature of the Cocoon Swaddle Bag? Easy to use, Cosy fit, Soft materialReviewingCocoon Swaddle Sack 2.5 TOG WillowRated 3 out of 5 starsGreat and comfy product but shrinks!
I have and have had purchased for us several sleeping bags.
The quality, comfort and features are great but the impact and shrinkage of machine washing these is beyond what I would expect. (Using a delicate wash cycle in a Bosch series 6).
EUergopouch US1/29/26Hi David
Thank you for taking the time to share your feedback. We're sorry to hear about the shrinkage after washing.
All of our fabrics are pre-washed and undergo shrinkage testing before production. However, due to the organic nature of our fabrics, some minor shrinkage can occasionally occur depending on washing conditions such as agitation strength, water temperature and types of detergents used.
If you feel that your pouch has shrunk significantly, please let our customer support team know. They will be reaching out to you to assist further and ensure this is resolved for you.
We truly appreciate you bringing this to our attention and thank you for your support.
- Miriam G.Verified BuyerHow old is your little one? Newborn 1-3 MonthsWhat is your relationship to the child? Family / FriendWhat is your favorite feature of the Cocoon Swaddle Bag? Zip-up, no-wrap design, Quality construction, Soft material, Cosy fit, Arm poppers for transition1/19/26How old is your little one? Newborn 1-3 MonthsWhat is your relationship to the child? Family / FriendWhat is your favorite feature of the Cocoon Swaddle Bag? Zip-up, no-wrap design, Quality construction, Soft material, Cosy fit, Arm poppers for transitionReviewingCocoon Swaddle Sack 2.5 TOG WillowRated 5 out of 5 starsDelicious!
I gave this as a gift to a friend, she said it's delicious! She loves the feeling and softness of the fabric, at the same time as the firmness it provides for the baby's hold! She is a qualified midwife, and says, ''This has obviously been very cleverly designed for babies! It's better than a usual foldable swaddle material! The first night, my baby slept 8 hours!! (5 week old). In the morning she was unsettled, I put her in the cocoon and she fell right back asleep!
