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 | 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) maximum | 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 £65
- Estimated dispatch: 11 July 2025
- 30 day returns & exchanges
- Penelope S.Verified Buyer7/7/25ReviewingCocoon Swaddle Bag 3.5 TOG WillowRated 5 out of 5 starsWinter warmth
Bought this for my grandson for the coming winter. Gorgeous, thick & lovely towelling lining.
Colour is very calming. Well worth the price:)
- Rainey N.Verified Buyer7/1/25ReviewingCocoon Swaddle Bag 2.5 TOG DaisiesRated 5 out of 5 starsLove this cocoon
My newborn loved these cocoons she slept better in this brand than others
- Emily P.Verified Buyer7/1/25ReviewingCocoon Swaddle Bag 3.5 TOG Oatmeal MarleRated 5 out of 5 starsSuperior Quality
Absolutely can not go past these sleep suits - I have them in every option for my children and find them to be very long lasting, and suitable for cooler climates. I love that this style can be arms in, out or butterfly with the cardi - it’s hard to know how your newborn will prefer to sleep so these are perfect.