Cocoon Swaddle Bag 3.5 TOG Oatmeal Marle
One swaddle, 3 ways to wear - arms in, hands up, or arms out. The only swaddle to grow with your baby's startle reflex.
Size Guide
Cocoon Swaddle Bag
Please use your child's weight to find the most appropriate and safe size for them.
| ergoPouch Size (same as size) |
Pouch Length (cm) | Child Weight (kg) | Child Height (cm) |
|---|---|---|---|
| 00000 | 47cm | 2-3kg | 50cm |
| 0000 (Newborn) |
52cm | 3-4kg | 55cm |
| 0-3M (000) |
60cm | 3-6kg | 62cm |
| 3-6M* (00) |
70cm | 6-8kg | 62-68cm |
| 6-12M (0) |
76cm (0.2/1.0 TOG) 80cm (2.5 TOG) |
8-10kg | 68-76cm |
|
ergoPouch Size (same as size) |
Pouch Length (inch) | Child Weight (lb) | Child Height (inch) |
|---|---|---|---|
| 00000 | 18.5" | 4-7lbs | 19.7" |
|
0000 (Newborn) |
20.5" | 7-9lbs | 21.7" |
| 0-3M (000) |
23.6" | 7-13lbs | 24.4" |
| 3-6M* (00) |
27.6" | 13-18lbs | 24.4"-26.8" |
| 6-12M (0) |
29.9" (0.2/1.0 TOG) 31.5" (2.5 TOG) |
18-22lbs | 26.8"-29.9" |
*Previously size 2-6 months
To comply with safety requirements, our Cocoon Swaddle Bags 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.
See full size guide for all products
- Free delivery on orders over £65
- Estimated dispatch: 02 November 2026
- 30-day returns and exchanges
- Comfort
- Fit
- Warmth
- Sleep
- Quality
- Julia B.Verified BuyerReviewingCocoon Swaddle Bag 2.5 TOG Elephant ParadeI recommend this productRated 5 out of 5 stars4 minutes agoOur favorite sleep sack
We have used these sleep sacks for the first 6 weeks thus far and our daughter sleeps so well! The double zipper makes diaper changes very easy. Great quality, tog options, and we love the option for arms out once she starts rolling.
- MissReviewingCocoon Swaddle Bag 2.5 TOG InkI recommend this productRated 5 out of 5 stars1 week ago5 Stars
Great quality and speedy delivery
- Aurelie S.Verified BuyerReviewingCocoon Swaddle Bag 2.5 TOG Oatmeal MarleHow old is your little one? Newborn 1-3 MonthsWhat is your relationship to the child? Experienced parent 1+ childWhat is your favorite feature of the Cocoon Swaddle Bag? Soft material, Convenient double-zipperRated 3 out of 5 stars2 weeks agoSwaddles
I first purchased another brand and was not satisfied with the quality so I decided to go with Ergopouch for better quality
The 0-3 month swaddle was too small for my newborn despite her being only 4.75kg at time of purchase
We then started using the 3-6 month swaddle and unfortunately now on 2 occassions her arms came out of the swaddle at night (buttons undid themselves)
EUergoPouch UK6 days agoHi Aurelie
Thank you for taking the time to share your feedback with us. We're really sorry to hear that the cocoon swaddle you purchased didn't meet your expectations. That's certainly not the experience we want for you or your little one.
You have raised some points regarding the cocoon sizing, and we appreciate you bringing it to our attention. For the cocoon to work as intended, it should fit quite firmly around the chest and shoulder area, with the arms tucked in snugly to mimic the swaddling effect. When the fit is correct, babies should not be able to wriggle their arms out.
To help us better understand what's happening and to make sure your baby is in the right-sized cocoon, can you please reach out to our customer support team at cs@ergopouch.com.au. If you can kindly provide your order details and the details of your concerns, a customer support team member will assist you in troubleshooting or resolving this.