Sleep Sack 2.5 TOG Willow
Baby and toddler sleep sack designed for arms-out sleepers (usually from around 3 months of age).
Size Guide
Sleep Sack (formerly Jersey Sleep Sack)
Imperial Size Chart
| ergoPouch Size
(same as size) |
Pouch Length (inch) | Child Weight (lb) | Child Height (inch) |
|---|---|---|---|
| 3-12M (000-1y) |
31.5" | 13 - 22lb | 24.4 - 29.9" |
| 8-24M (00-2y) |
35.4" | 18-31lb | 26.8 - 36.2" |
| 2-4Y | 41.3" | Follow Height Markers | 36.2 - 42.5" |
Metric Size Chart
| ergoPouch Size
(same as size) |
Pouch Length (cm) | Child Weight (kg) | Child Height (cm) |
|---|---|---|---|
| 3-12M (000-1y) |
80cm | 6-10kg | 62-76cm |
| 8-24M (00-2y) |
90cm | 8-14kg | 68-92cm |
| 2-4Y | 105cm | Follow Height Markers | 92-108cm |
Our Sleep Sack is a baby and toddler sleeping bag designed for arms-out sleepers (usually from around 3 months of age). The Sleep Sack has a slim-fit, stretchy design similar to that of a swaddle and is recommended as baby's 'first sleep sack' after the swaddling phase is over. Please use your child's weight and height to find the most appropriate and safe size for them. A sleep sack should be well fitted around the neck and the armholes to avoid your baby slipping through. It should also be bell shaped in the bottom to allow for easy leg movement. Please do not size up to the next size until your child meets the weight requirement, for safety reasons.
- Free delivery on orders over $70*
- Estimated dispatch: 05 March 2026
- 30-day returns and exchanges
- Leah M.Verified Buyer2/26/26ReviewingSleep Sack 2.5 TOG Elephant ParadeRated 5 out of 5 starsThese are the only sleep sacks my LO likes
Our LO hates being wrapped up. Resisted swaddling with all her little might. We've tried every swaddle and sleep sack we can find and the ergoPouches are the only ones she doesn't actively fight. The shape allows her to move around and feel less constrained while keeping her warm and safe.
We started with the transition one to help with her startle reflex (very helpful that it comes in a 0-3m size!) and once she outgrew it, moved to the standard sacks. They're both awesome!
- Casey R.Verified Buyer2/16/26ReviewingSleep Sack 3.5 TOG Sleeved DragonfliesRated 5 out of 5 starsLove for cold nights!
This is so cozy and will grow with your baby!
- Lisa B.Verified Buyer2/11/26ReviewingSleep Sack 3.5 TOG Sleeved Oatmeal MarleRated 5 out of 5 starsGreat sleep pouch
Warm, sleeves are like a sweat shirt material. Washes and drys well.
