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: 27 May 2025
- 30 day returns and exchanges for full priced products
- Eden H.Verified Buyer5/19/25ReviewingCocoon Swaddle Sack 2.5 TOG WillowRated 5 out of 5 starswe both love it
first full night sleep, thank you !
- Abigail C.Verified Buyer5/12/25ReviewingCocoon Swaddle Sack 2.5 TOG Night SkyRated 5 out of 5 starsPerfect for winter/Autumn
As a first time mum I have absolutely LOVED these sleep sacks. They make layering for bedtime so easy especially with the TOG guide that comes with every purchase. Love layering this one with a 1.0 layer for a colder night.
- Chloe P.Verified Buyer5/8/25ReviewingCocoon Swaddle Sack 3.5 TOG DragonfliesRated 5 out of 5 starsLove it
We love this swaddle bag, we find sizing up is the best fit though!