Cocoon Swaddle Sack 3.5 TOG Willow
One swaddle, 3 ways to wear - arms in, hands up, or arms out. The only swaddle to grow with your baby's startle reflex.
Size Guide
Cocoon Swaddle Sack
Please use your child's weight and height to find the most appropriate and safe size for them.
Imperial Size Chart for ergoPouch Cocoon Swaddle Sack
|
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
Learn how to swaddle your baby for safety using the Cocoon Swaddle Sack
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.
See full size guide for all products
Metric Size Chart
| 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
- Free delivery on orders over $70*
- Estimated dispatch: 17 April 2026
- 30-day returns and exchanges
- Natalia B.Verified Buyer4/7/26ReviewingCocoon Swaddle Sack 2.5 TOG Sweet OrchardRated 5 out of 5 starsBeautiful!
We love all ergopouch products! This swaddle bag is amazing for autumn/winter. Soft and cozy both on the inside and outside. I love that you can have arms both in and out. It’s perfect!
- Jasmin U.Verified Buyer4/6/26ReviewingCocoon Swaddle Sack 2.5 TOG Night SkyRated 5 out of 5 starsFantastic!
Great quality and fit, the TOG and temperature guide helped with my newborns sleep so much!
- Nina J.Verified Buyer3/19/26ReviewingCocoon Swaddle Sack 2.5 TOG Fruit SaladRated 5 out of 5 starsCute and toasty!
Already had the 1.0 swaddle! Went with the 2.5 in case we have chilly nights! The design is fun and I love that there can be arm holes in case baby doesn’t like being swaddled!
