A secure, multi-functional swaddle and sleep sack in one, designed to be worn for sleep from birth.
Size Guide
Cocoon Swaddle Bag
Please use your child's weight to find the most appropriate and safe size for them. 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.
| ergoPouch size | Newborn | 0-3M | 3-6M* | 6-12M |
|---|---|---|---|---|
| Same as size | 0000 | 000 | 00 | 0 |
| Pouch length (cm/inch) | 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) maximum | 3-4kg / 7-9lb | 3-6kg / 7-13lb | 6-8kg / 13-18lb | 8-10kg / 18-22lb |
| Child height (cm/inch) maximum | 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 £65
- Estimated dispatch: 21 December 2025
- Extended Holiday Returns until 31st Jan
- Laura H.Verified Buyer4 minutes agoReviewingCocoon Swaddle Bag 2.5 TOG DaisiesRated 5 out of 5 starsGreat swaddle sack
Warm and comfortable for our baby. Fits well with plenty of room to grow.
- Carolyn W.Verified Buyer2 days agoReviewingCocoon Swaddle Bag 2.5 TOG InkRated 5 out of 5 starsExcellent quality
Excellent quality, fits snuggly. High end material and feel. Baby sleeps comfortably in this. Description of sizing and warmth was excellent
- From H. G. N. (.Verified Buyer1 week agoReviewingCocoon Swaddle Bag 2.5 TOG Elephant ParadeRated 5 out of 5 starsQuality
Love the ergo swaddles they are made with care and quality materials. My newborn sleeps well in them and seems happier in this brand compared to others.
Our order was delivered without delay also which was great.