A secure, multi-functional swaddle and sleeping bag in one, designed to be worn for sleep from birth.
Size Guide
Cocoon Swaddle Bag
Please use your child's weight and height 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 |
*Previously size 2-6 months
^Metric Size Chart for ergoPouch Cocoon Swaddle Bag
Learn how to swaddle your baby for safety using the Cocoon Swaddle Bag
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
Imperial Size Chart for ergoPouch Cocoon Swaddle Bag
|
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
- Free delivery on orders over £65
- Estimated dispatch: 23 February 2026
- 30-day returns and exchanges
- Sonia S.Verified Buyer1 month agoReviewingCocoon Swaddle Bag 0.2 TOG DragonfliesRated 5 out of 5 starsGreat purchase
Really great, easy to use and helps baby sleep much better. Will be buying more.
- Georgia L.Verified Buyer1 month agoReviewingCocoon Swaddle Bag 0.2 TOG WillowRated 5 out of 5 starsLove!
Love it!
- Sharmayne1 month agoReviewingCocoon Swaddle Bag 0.2 TOG Honey BeesRated 3 out of 5 starsToo stretchy
We love the ergo pouch range but the 0.2 is too stretchy and our little one does a Houdini and gets his arms right up to his face and unzips the pouch!
EUergoPouch UK1 month agoHi Sharmayne
Thank you for sharing your feedback. We're sorry to hear you've had a frustrating experience with your cocoon swaddle and appreciate you bringing it to our attention. We would love the opportunity to discuss this further with you. One of our Customer Support Specialist will be in contact with you to assist in this matter.