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: 11 January 2026
- Extended Holiday Returns until Jan 31st
- Rebekah K.Verified Buyer12/24/25ReviewingCocoon Swaddle Sack 2.5 TOG WillowRated 4 out of 5 starsGreat sleep sack
Great quality for the sleep sack, the arm holes stay buttoned even when my 3mo wiggles around at night (obviously she still can’t roll over).
My only complaint is about the zipper. I wish the zipper was better quality and either: 1) stayed in place at the top more easily, or 2) fastened at the top and zipped closed with the tab at the bottom. When the zipper is closed at the top, pressure at a certain angle from the inside can make it start to unzip.
- Laura H.Verified Buyer12/17/25ReviewingCocoon Swaddle Sack 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.
- Amy C.Verified Buyer12/16/25ReviewingCocoon Swaddle Sack 2.5 TOG SavannahRated 1 out of 5 starsRipped
It ripped and I just got it
