Sleep Suit Sack 3.5 TOG Willow
The Sleep Suit sack is an award-winning, multi-functional sleep sack and Sleep Suit with legs in one, for babies, toddlers and kids.
Size Guide
Sleep Suit Sack
Please use your child's weight and height to find the most appropriate and safe size for them.
| ergoPouch Size
(same as size) |
Pouch Length (cm) | Sleeve length (cm) | Child weight (kg) | Child Height (cm) |
|---|---|---|---|---|
| 3-12M* (000-1y) |
80cm | 28cm | 6-12kg | 62-84cm |
| 8-24M (00-2y) |
90cm | 32cm | 8-14kg | 68-92cm |
| 2-4Y | 105cm | 36cm | Follow height markers | 92-108cm |
| 4-6Y | 120cm | 43cm | Follow height markers | 108-120cm |
| 6-8Y | 135cm | 50cm | Follow height markers | 120 - 130cm |
| ergoPouch Size
(same as size) |
Pouch Length (inch) | Sleeve length (inch) | Child weight (lb) | Child Height (inch) |
|---|---|---|---|---|
| 3-12M* (000-1y) |
31.5" | 11" | 13-26lb | 24.4 - 33.1" |
| 8-24M (00-2y) |
35.4" | 12.6" | 18-31lb | 26.8 - 36.2" |
| 2-4Y | 41.3" | 14.2" | Follow height markers | 36.2 - 42.5" |
| 4-6Y | 47.2" | 16.9" | Follow height markers | 42.5 - 47.2" |
| 6-8Y | 53.1" | 19.7" | Follow height markers | 47.2 - 51.2" |
*Previously size 2-12 months
The Sleep Suit Sack should be fitted around the neck and the armholes to avoid your child slipping through. In 'legs' mode, there should be enough length at the end of the suit to allow your child to move their feet freely. 2.5 TOG and 3.5 TOG Sleep Suit Sacks should not be used in a 5-point harness or car seat for safety reasons.
See full size guide for all products
- Free delivery on orders over $70*
- Estimated dispatch: 11 September 2026
- 30-day returns and exchanges
- Kate S.Verified Buyer8/19/26ReviewingSleep Suit Sack 2.5 TOG WhaleRated 4 out of 5 starsWish it had the same upper closure like the standard sleep sack
These sleep suits are great. This one, however, is missing the snap closure at the neck like the others all have
- Shubhashree M.Verified Buyer7/23/26ReviewingSleep Suit Sack 2.5 TOG SageRated 3 out of 5 starsAverage Quality
Weve only used it handful of times now and the stitching from sleeves are coming off. My toddler was fascinated by the thread and she was trying to break it. I have just found along with the other zip suits that we have bought - the quality has been average
EUergopouch US8/18/26Hi Shubhashree
Thank you for sharing your feedback. We're sorry to hear you've had a frustrating experience with the Cocoon Swaddle Bag, and we appreciate you bringing it to our attention. Please be assured that we maintain high standards in manufacturing and product quality, and we would welcome the opportunity to discuss this issue further with you. When you get a moment, please contact us at cs@ergopouch.com.au, and one of our Customer Support Specialists will be more than happy to assist with this matter.
- Valeska V. V.Verified Buyer7/19/26ReviewingSleep Suit Sack 3.5 TOG DragonfliesRated 4 out of 5 starsGreat!
It’s an amazing suit! If I could change one thing, it would be the sleeve length. They always seem to be too short. Even when I buy a larger size, the sleeves are still quite short. Other than that, it’s a fantastic product.
